20846540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:267

約数の個数: 96

約数和(自身を含む): 53089344

約数和(自身を除く): 32242804

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 37, 44, 52, 55, 65, 74, 110, 130, 143, 148, 185, 197, 220, 260, 286, 370, 394, 407, 481, 572, 715, 740, 788, 814, 962, 985, 1430, 1628, 1924, 1970, 2035, 2167, 2405, 2561, 2860, 3940, 4070, 4334, 4810, 5122, 5291, 7289, 8140, 8668, 9620, 10244, 10582, 10835, 12805, 14578, 21164, 21670, 25610, 26455, 28171, 29156, 36445, 43340, 51220, 52910, 56342, 72890, 80179, 94757, 105820, 112684, 140855, 145780, 160358, 189514, 281710, 320716, 379028, 400895, 473785, 563420, 801790, 947570, 1042327, 1603580, 1895140, 2084654, 4169308, 5211635, 10423270, 20846540]

約数ペア:

[(1, 20846540), (2, 10423270), (4, 5211635), (5, 4169308), (10, 2084654), (11, 1895140), (13, 1603580), (20, 1042327), (22, 947570), (26, 801790), (37, 563420), (44, 473785), (52, 400895), (55, 379028), (65, 320716), (74, 281710), (110, 189514), (130, 160358), (143, 145780), (148, 140855), (185, 112684), (197, 105820), (220, 94757), (260, 80179), (286, 72890), (370, 56342), (394, 52910), (407, 51220), (481, 43340), (572, 36445), (715, 29156), (740, 28171), (788, 26455), (814, 25610), (962, 21670), (985, 21164), (1430, 14578), (1628, 12805), (1924, 10835), (1970, 10582), (2035, 10244), (2167, 9620), (2405, 8668), (2561, 8140), (2860, 7289), (3940, 5291), (4070, 5122), (4334, 4810)]