21484440

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1$

素因数の和:391

約数の個数: 160

約数和(自身を含む): 76230000

約数和(自身を除く): 54745560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 81, 90, 95, 108, 114, 120, 135, 152, 162, 171, 180, 190, 216, 228, 270, 285, 324, 342, 349, 360, 380, 405, 456, 513, 540, 570, 648, 684, 698, 760, 810, 855, 1026, 1047, 1080, 1140, 1368, 1396, 1539, 1620, 1710, 1745, 2052, 2094, 2280, 2565, 2792, 3078, 3141, 3240, 3420, 3490, 4104, 4188, 5130, 5235, 6156, 6282, 6631, 6840, 6980, 7695, 8376, 9423, 10260, 10470, 12312, 12564, 13262, 13960, 15390, 15705, 18846, 19893, 20520, 20940, 25128, 26524, 28269, 30780, 31410, 33155, 37692, 39786, 41880, 47115, 53048, 56538, 59679, 61560, 62820, 66310, 75384, 79572, 94230, 99465, 113076, 119358, 125640, 132620, 141345, 159144, 179037, 188460, 198930, 226152, 238716, 265240, 282690, 298395, 358074, 376920, 397860, 477432, 537111, 565380, 596790, 716148, 795720, 895185, 1074222, 1130760, 1193580, 1432296, 1790370, 2148444, 2387160, 2685555, 3580740, 4296888, 5371110, 7161480, 10742220, 21484440]

約数ペア:

[(1, 21484440), (2, 10742220), (3, 7161480), (4, 5371110), (5, 4296888), (6, 3580740), (8, 2685555), (9, 2387160), (10, 2148444), (12, 1790370), (15, 1432296), (18, 1193580), (19, 1130760), (20, 1074222), (24, 895185), (27, 795720), (30, 716148), (36, 596790), (38, 565380), (40, 537111), (45, 477432), (54, 397860), (57, 376920), (60, 358074), (72, 298395), (76, 282690), (81, 265240), (90, 238716), (95, 226152), (108, 198930), (114, 188460), (120, 179037), (135, 159144), (152, 141345), (162, 132620), (171, 125640), (180, 119358), (190, 113076), (216, 99465), (228, 94230), (270, 79572), (285, 75384), (324, 66310), (342, 62820), (349, 61560), (360, 59679), (380, 56538), (405, 53048), (456, 47115), (513, 41880), (540, 39786), (570, 37692), (648, 33155), (684, 31410), (698, 30780), (760, 28269), (810, 26524), (855, 25128), (1026, 20940), (1047, 20520), (1080, 19893), (1140, 18846), (1368, 15705), (1396, 15390), (1539, 13960), (1620, 13262), (1710, 12564), (1745, 12312), (2052, 10470), (2094, 10260), (2280, 9423), (2565, 8376), (2792, 7695), (3078, 6980), (3141, 6840), (3240, 6631), (3420, 6282), (3490, 6156), (4104, 5235), (4188, 5130)]