21105358040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{8353}}^1$

素因数の和:8533

約数の個数: 128

約数和(自身を含む): 52798616640

約数和(自身を除く): 31693258600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 113, 130, 172, 215, 226, 260, 344, 430, 452, 520, 559, 565, 860, 904, 1118, 1130, 1469, 1720, 2236, 2260, 2795, 2938, 4472, 4520, 4859, 5590, 5876, 7345, 8353, 9718, 11180, 11752, 14690, 16706, 19436, 22360, 24295, 29380, 33412, 38872, 41765, 48590, 58760, 63167, 66824, 83530, 97180, 108589, 126334, 167060, 194360, 217178, 252668, 315835, 334120, 359179, 434356, 505336, 542945, 631670, 718358, 868712, 943889, 1085890, 1263340, 1436716, 1795895, 1887778, 2171780, 2526680, 2873432, 3591790, 3775556, 4343560, 4669327, 4719445, 7183580, 7551112, 9338654, 9438890, 12270557, 14367160, 18677308, 18877780, 23346635, 24541114, 37354616, 37755560, 40587227, 46693270, 49082228, 61352785, 81174454, 93386540, 98164456, 122705570, 162348908, 186773080, 202936135, 245411140, 324697816, 405872270, 490822280, 527633951, 811744540, 1055267902, 1623489080, 2110535804, 2638169755, 4221071608, 5276339510, 10552679020, 21105358040]

約数ペア:

[(1, 21105358040), (2, 10552679020), (4, 5276339510), (5, 4221071608), (8, 2638169755), (10, 2110535804), (13, 1623489080), (20, 1055267902), (26, 811744540), (40, 527633951), (43, 490822280), (52, 405872270), (65, 324697816), (86, 245411140), (104, 202936135), (113, 186773080), (130, 162348908), (172, 122705570), (215, 98164456), (226, 93386540), (260, 81174454), (344, 61352785), (430, 49082228), (452, 46693270), (520, 40587227), (559, 37755560), (565, 37354616), (860, 24541114), (904, 23346635), (1118, 18877780), (1130, 18677308), (1469, 14367160), (1720, 12270557), (2236, 9438890), (2260, 9338654), (2795, 7551112), (2938, 7183580), (4472, 4719445), (4520, 4669327), (4859, 4343560), (5590, 3775556), (5876, 3591790), (7345, 2873432), (8353, 2526680), (9718, 2171780), (11180, 1887778), (11752, 1795895), (14690, 1436716), (16706, 1263340), (19436, 1085890), (22360, 943889), (24295, 868712), (29380, 718358), (33412, 631670), (38872, 542945), (41765, 505336), (48590, 434356), (58760, 359179), (63167, 334120), (66824, 315835), (83530, 252668), (97180, 217178), (108589, 194360), (126334, 167060)]