19911476

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 39325440

約数和(自身を除く): 19413964

約数列:

[1, 2, 4, 13, 26, 37, 52, 74, 79, 131, 148, 158, 262, 316, 481, 524, 962, 1027, 1703, 1924, 2054, 2923, 3406, 4108, 4847, 5846, 6812, 9694, 10349, 11692, 19388, 20698, 37999, 41396, 63011, 75998, 126022, 134537, 151996, 252044, 269074, 382913, 538148, 765826, 1531652, 4977869, 9955738, 19911476]

約数ペア:

[(1, 19911476), (2, 9955738), (4, 4977869), (13, 1531652), (26, 765826), (37, 538148), (52, 382913), (74, 269074), (79, 252044), (131, 151996), (148, 134537), (158, 126022), (262, 75998), (316, 63011), (481, 41396), (524, 37999), (962, 20698), (1027, 19388), (1703, 11692), (1924, 10349), (2054, 9694), (2923, 6812), (3406, 5846), (4108, 4847)]