20904104

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 45360000

約数和(自身を除く): 24455896

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 71, 76, 104, 142, 149, 152, 247, 284, 298, 494, 568, 596, 923, 988, 1192, 1349, 1846, 1937, 1976, 2698, 2831, 3692, 3874, 5396, 5662, 7384, 7748, 10579, 10792, 11324, 15496, 17537, 21158, 22648, 35074, 36803, 42316, 70148, 73606, 84632, 137527, 140296, 147212, 201001, 275054, 294424, 402002, 550108, 804004, 1100216, 1608008, 2613013, 5226026, 10452052, 20904104]

約数ペア:

[(1, 20904104), (2, 10452052), (4, 5226026), (8, 2613013), (13, 1608008), (19, 1100216), (26, 804004), (38, 550108), (52, 402002), (71, 294424), (76, 275054), (104, 201001), (142, 147212), (149, 140296), (152, 137527), (247, 84632), (284, 73606), (298, 70148), (494, 42316), (568, 36803), (596, 35074), (923, 22648), (988, 21158), (1192, 17537), (1349, 15496), (1846, 11324), (1937, 10792), (1976, 10579), (2698, 7748), (2831, 7384), (3692, 5662), (3874, 5396)]