80913040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77801}}^1$

素因数の和:77827

約数の個数: 40

約数和(自身を含む): 202596408

約数和(自身を除く): 121683368

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 77801, 155602, 311204, 389005, 622408, 778010, 1011413, 1244816, 1556020, 2022826, 3112040, 4045652, 5057065, 6224080, 8091304, 10114130, 16182608, 20228260, 40456520, 80913040]

約数ペア:

[(1, 80913040), (2, 40456520), (4, 20228260), (5, 16182608), (8, 10114130), (10, 8091304), (13, 6224080), (16, 5057065), (20, 4045652), (26, 3112040), (40, 2022826), (52, 1556020), (65, 1244816), (80, 1011413), (104, 778010), (130, 622408), (208, 389005), (260, 311204), (520, 155602), (1040, 77801)]