18943472

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:401

約数の個数: 40

約数和(自身を含む): 37966320

約数和(自身を除く): 19022848

約数列:

[1, 2, 4, 8, 16, 53, 89, 106, 178, 212, 251, 356, 424, 502, 712, 848, 1004, 1424, 2008, 4016, 4717, 9434, 13303, 18868, 22339, 26606, 37736, 44678, 53212, 75472, 89356, 106424, 178712, 212848, 357424, 1183967, 2367934, 4735868, 9471736, 18943472]

約数ペア:

[(1, 18943472), (2, 9471736), (4, 4735868), (8, 2367934), (16, 1183967), (53, 357424), (89, 212848), (106, 178712), (178, 106424), (212, 89356), (251, 75472), (356, 53212), (424, 44678), (502, 37736), (712, 26606), (848, 22339), (1004, 18868), (1424, 13303), (2008, 9434), (4016, 4717)]