21498750

素因数分解:

$2^1\times 3^3\times 5^4\times 7^2\times {\mathrm{13}}^1$

素因数の和:58

約数の個数: 240

約数和(自身を含む): 74788560

約数和(自身を除く): 53289810

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 25, 26, 27, 30, 35, 39, 42, 45, 49, 50, 54, 63, 65, 70, 75, 78, 90, 91, 98, 105, 117, 125, 126, 130, 135, 147, 150, 175, 182, 189, 195, 210, 225, 234, 245, 250, 270, 273, 294, 315, 325, 350, 351, 375, 378, 390, 441, 450, 455, 490, 525, 546, 585, 625, 630, 637, 650, 675, 702, 735, 750, 819, 875, 882, 910, 945, 975, 1050, 1125, 1170, 1225, 1250, 1274, 1323, 1350, 1365, 1470, 1575, 1625, 1638, 1750, 1755, 1875, 1890, 1911, 1950, 2205, 2250, 2275, 2450, 2457, 2625, 2646, 2730, 2925, 3150, 3185, 3250, 3375, 3510, 3675, 3750, 3822, 4095, 4375, 4410, 4550, 4725, 4875, 4914, 5250, 5625, 5733, 5850, 6125, 6370, 6615, 6750, 6825, 7350, 7875, 8125, 8190, 8750, 8775, 9450, 9555, 9750, 11025, 11250, 11375, 11466, 12250, 12285, 13125, 13230, 13650, 14625, 15750, 15925, 16250, 16875, 17199, 17550, 18375, 19110, 20475, 22050, 22750, 23625, 24375, 24570, 26250, 28665, 29250, 30625, 31850, 33075, 33750, 34125, 34398, 36750, 39375, 40950, 43875, 47250, 47775, 48750, 55125, 56875, 57330, 61250, 61425, 66150, 68250, 73125, 78750, 79625, 85995, 87750, 91875, 95550, 102375, 110250, 113750, 118125, 122850, 143325, 146250, 159250, 165375, 170625, 171990, 183750, 204750, 219375, 236250, 238875, 275625, 286650, 307125, 330750, 341250, 398125, 429975, 438750, 477750, 511875, 551250, 614250, 716625, 796250, 826875, 859950, 1023750, 1194375, 1433250, 1535625, 1653750, 2149875, 2388750, 3071250, 3583125, 4299750, 7166250, 10749375, 21498750]

約数ペア:

[(1, 21498750), (2, 10749375), (3, 7166250), (5, 4299750), (6, 3583125), (7, 3071250), (9, 2388750), (10, 2149875), (13, 1653750), (14, 1535625), (15, 1433250), (18, 1194375), (21, 1023750), (25, 859950), (26, 826875), (27, 796250), (30, 716625), (35, 614250), (39, 551250), (42, 511875), (45, 477750), (49, 438750), (50, 429975), (54, 398125), (63, 341250), (65, 330750), (70, 307125), (75, 286650), (78, 275625), (90, 238875), (91, 236250), (98, 219375), (105, 204750), (117, 183750), (125, 171990), (126, 170625), (130, 165375), (135, 159250), (147, 146250), (150, 143325), (175, 122850), (182, 118125), (189, 113750), (195, 110250), (210, 102375), (225, 95550), (234, 91875), (245, 87750), (250, 85995), (270, 79625), (273, 78750), (294, 73125), (315, 68250), (325, 66150), (350, 61425), (351, 61250), (375, 57330), (378, 56875), (390, 55125), (441, 48750), (450, 47775), (455, 47250), (490, 43875), (525, 40950), (546, 39375), (585, 36750), (625, 34398), (630, 34125), (637, 33750), (650, 33075), (675, 31850), (702, 30625), (735, 29250), (750, 28665), (819, 26250), (875, 24570), (882, 24375), (910, 23625), (945, 22750), (975, 22050), (1050, 20475), (1125, 19110), (1170, 18375), (1225, 17550), (1250, 17199), (1274, 16875), (1323, 16250), (1350, 15925), (1365, 15750), (1470, 14625), (1575, 13650), (1625, 13230), (1638, 13125), (1750, 12285), (1755, 12250), (1875, 11466), (1890, 11375), (1911, 11250), (1950, 11025), (2205, 9750), (2250, 9555), (2275, 9450), (2450, 8775), (2457, 8750), (2625, 8190), (2646, 8125), (2730, 7875), (2925, 7350), (3150, 6825), (3185, 6750), (3250, 6615), (3375, 6370), (3510, 6125), (3675, 5850), (3750, 5733), (3822, 5625), (4095, 5250), (4375, 4914), (4410, 4875), (4550, 4725)]