20449624

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 44352000

約数和(自身を除く): 23902376

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 79, 104, 131, 152, 158, 247, 262, 316, 494, 524, 632, 988, 1027, 1048, 1501, 1703, 1976, 2054, 2489, 3002, 3406, 4108, 4978, 6004, 6812, 8216, 9956, 10349, 12008, 13624, 19513, 19912, 20698, 32357, 39026, 41396, 64714, 78052, 82792, 129428, 134537, 156104, 196631, 258856, 269074, 393262, 538148, 786524, 1076296, 1573048, 2556203, 5112406, 10224812, 20449624]

約数ペア:

[(1, 20449624), (2, 10224812), (4, 5112406), (8, 2556203), (13, 1573048), (19, 1076296), (26, 786524), (38, 538148), (52, 393262), (76, 269074), (79, 258856), (104, 196631), (131, 156104), (152, 134537), (158, 129428), (247, 82792), (262, 78052), (316, 64714), (494, 41396), (524, 39026), (632, 32357), (988, 20698), (1027, 19912), (1048, 19513), (1501, 13624), (1703, 12008), (1976, 10349), (2054, 9956), (2489, 8216), (3002, 6812), (3406, 6004), (4108, 4978)]