80718820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{44351}}^1$

素因数の和:44380

約数の個数: 48

約数和(自身を含む): 208631808

約数和(自身を除く): 127912988

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 44351, 88702, 177404, 221755, 310457, 443510, 576563, 620914, 887020, 1153126, 1241828, 1552285, 2306252, 2882815, 3104570, 4035941, 5765630, 6209140, 8071882, 11531260, 16143764, 20179705, 40359410, 80718820]

約数ペア:

[(1, 80718820), (2, 40359410), (4, 20179705), (5, 16143764), (7, 11531260), (10, 8071882), (13, 6209140), (14, 5765630), (20, 4035941), (26, 3104570), (28, 2882815), (35, 2306252), (52, 1552285), (65, 1241828), (70, 1153126), (91, 887020), (130, 620914), (140, 576563), (182, 443510), (260, 310457), (364, 221755), (455, 177404), (910, 88702), (1820, 44351)]