981136

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:163

約数の個数: 40

約数和(自身を含む): 2109240

約数和(自身を除く): 1128104

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 53, 89, 104, 106, 178, 208, 212, 356, 424, 689, 712, 848, 1157, 1378, 1424, 2314, 2756, 4628, 4717, 5512, 9256, 9434, 11024, 18512, 18868, 37736, 61321, 75472, 122642, 245284, 490568, 981136]

約数ペア:

[(1, 981136), (2, 490568), (4, 245284), (8, 122642), (13, 75472), (16, 61321), (26, 37736), (52, 18868), (53, 18512), (89, 11024), (104, 9434), (106, 9256), (178, 5512), (208, 4717), (212, 4628), (356, 2756), (424, 2314), (689, 1424), (712, 1378), (848, 1157)]