21146580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1291}}^1$

素因数の和:1326

約数の個数: 144

約数和(自身を含む): 79008384

約数和(自身を除く): 57861804

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1260, 1291, 1365, 1638, 1820, 2340, 2582, 2730, 3276, 3873, 4095, 5164, 5460, 6455, 7746, 8190, 9037, 11619, 12910, 15492, 16380, 16783, 18074, 19365, 23238, 25820, 27111, 33566, 36148, 38730, 45185, 46476, 50349, 54222, 58095, 67132, 77460, 81333, 83915, 90370, 100698, 108444, 116190, 117481, 135555, 151047, 162666, 167830, 180740, 201396, 232380, 234962, 251745, 271110, 302094, 325332, 335660, 352443, 406665, 469924, 503490, 542220, 587405, 604188, 704886, 755235, 813330, 1006980, 1057329, 1174810, 1409772, 1510470, 1626660, 1762215, 2114658, 2349620, 3020940, 3524430, 4229316, 5286645, 7048860, 10573290, 21146580]

約数ペア:

[(1, 21146580), (2, 10573290), (3, 7048860), (4, 5286645), (5, 4229316), (6, 3524430), (7, 3020940), (9, 2349620), (10, 2114658), (12, 1762215), (13, 1626660), (14, 1510470), (15, 1409772), (18, 1174810), (20, 1057329), (21, 1006980), (26, 813330), (28, 755235), (30, 704886), (35, 604188), (36, 587405), (39, 542220), (42, 503490), (45, 469924), (52, 406665), (60, 352443), (63, 335660), (65, 325332), (70, 302094), (78, 271110), (84, 251745), (90, 234962), (91, 232380), (105, 201396), (117, 180740), (126, 167830), (130, 162666), (140, 151047), (156, 135555), (180, 117481), (182, 116190), (195, 108444), (210, 100698), (234, 90370), (252, 83915), (260, 81333), (273, 77460), (315, 67132), (364, 58095), (390, 54222), (420, 50349), (455, 46476), (468, 45185), (546, 38730), (585, 36148), (630, 33566), (780, 27111), (819, 25820), (910, 23238), (1092, 19365), (1170, 18074), (1260, 16783), (1291, 16380), (1365, 15492), (1638, 12910), (1820, 11619), (2340, 9037), (2582, 8190), (2730, 7746), (3276, 6455), (3873, 5460), (4095, 5164)]