20121911840

素因数分解:

$2^5\times 5^1\times {\mathrm{6449}}^1\times {\mathrm{19501}}^1$

素因数の和:25965

約数の個数: 48

約数和(自身を含む): 47547826200

約数和(自身を除く): 27425914360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 6449, 12898, 19501, 25796, 32245, 39002, 51592, 64490, 78004, 97505, 103184, 128980, 156008, 195010, 206368, 257960, 312016, 390020, 515920, 624032, 780040, 1031840, 1560080, 3120160, 125761949, 251523898, 503047796, 628809745, 1006095592, 1257619490, 2012191184, 2515238980, 4024382368, 5030477960, 10060955920, 20121911840]

約数ペア:

[(1, 20121911840), (2, 10060955920), (4, 5030477960), (5, 4024382368), (8, 2515238980), (10, 2012191184), (16, 1257619490), (20, 1006095592), (32, 628809745), (40, 503047796), (80, 251523898), (160, 125761949), (6449, 3120160), (12898, 1560080), (19501, 1031840), (25796, 780040), (32245, 624032), (39002, 515920), (51592, 390020), (64490, 312016), (78004, 257960), (97505, 206368), (103184, 195010), (128980, 156008)]