21102900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{773}}^1$

素因数の和:810

約数の個数: 144

約数和(自身を含む): 75245184

約数和(自身を除く): 54142284

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 25, 26, 28, 30, 35, 39, 42, 50, 52, 60, 65, 70, 75, 78, 84, 91, 100, 105, 130, 140, 150, 156, 175, 182, 195, 210, 260, 273, 300, 325, 350, 364, 390, 420, 455, 525, 546, 650, 700, 773, 780, 910, 975, 1050, 1092, 1300, 1365, 1546, 1820, 1950, 2100, 2275, 2319, 2730, 3092, 3865, 3900, 4550, 4638, 5411, 5460, 6825, 7730, 9100, 9276, 10049, 10822, 11595, 13650, 15460, 16233, 19325, 20098, 21644, 23190, 27055, 27300, 30147, 32466, 38650, 40196, 46380, 50245, 54110, 57975, 60294, 64932, 70343, 77300, 81165, 100490, 108220, 115950, 120588, 135275, 140686, 150735, 162330, 200980, 211029, 231900, 251225, 270550, 281372, 301470, 324660, 351715, 405825, 422058, 502450, 541100, 602940, 703430, 753675, 811650, 844116, 1004900, 1055145, 1406860, 1507350, 1623300, 1758575, 2110290, 3014700, 3517150, 4220580, 5275725, 7034300, 10551450, 21102900]

約数ペア:

[(1, 21102900), (2, 10551450), (3, 7034300), (4, 5275725), (5, 4220580), (6, 3517150), (7, 3014700), (10, 2110290), (12, 1758575), (13, 1623300), (14, 1507350), (15, 1406860), (20, 1055145), (21, 1004900), (25, 844116), (26, 811650), (28, 753675), (30, 703430), (35, 602940), (39, 541100), (42, 502450), (50, 422058), (52, 405825), (60, 351715), (65, 324660), (70, 301470), (75, 281372), (78, 270550), (84, 251225), (91, 231900), (100, 211029), (105, 200980), (130, 162330), (140, 150735), (150, 140686), (156, 135275), (175, 120588), (182, 115950), (195, 108220), (210, 100490), (260, 81165), (273, 77300), (300, 70343), (325, 64932), (350, 60294), (364, 57975), (390, 54110), (420, 50245), (455, 46380), (525, 40196), (546, 38650), (650, 32466), (700, 30147), (773, 27300), (780, 27055), (910, 23190), (975, 21644), (1050, 20098), (1092, 19325), (1300, 16233), (1365, 15460), (1546, 13650), (1820, 11595), (1950, 10822), (2100, 10049), (2275, 9276), (2319, 9100), (2730, 7730), (3092, 6825), (3865, 5460), (3900, 5411), (4550, 4638)]