20559619340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1296319}}^1$

素因数の和:1296402

約数の個数: 48

約数和(自身を含む): 47258641920

約数和(自身を除く): 26699022580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 3172, 3965, 7930, 15860, 1296319, 2592638, 5185276, 6481595, 12963190, 16852147, 25926380, 33704294, 67408588, 79075459, 84260735, 158150918, 168521470, 316301836, 337042940, 395377295, 790754590, 1027980967, 1581509180, 2055961934, 4111923868, 5139904835, 10279809670, 20559619340]

約数ペア:

[(1, 20559619340), (2, 10279809670), (4, 5139904835), (5, 4111923868), (10, 2055961934), (13, 1581509180), (20, 1027980967), (26, 790754590), (52, 395377295), (61, 337042940), (65, 316301836), (122, 168521470), (130, 158150918), (244, 84260735), (260, 79075459), (305, 67408588), (610, 33704294), (793, 25926380), (1220, 16852147), (1586, 12963190), (3172, 6481595), (3965, 5185276), (7930, 2592638), (15860, 1296319)]