80706920

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41177}}^1$

素因数の和:41202

約数の個数: 48

約数和(自身を含む): 211243140

約数和(自身を除く): 130536220

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 41177, 82354, 164708, 205885, 288239, 329416, 411770, 576478, 823540, 1152956, 1441195, 1647080, 2017673, 2305912, 2882390, 4035346, 5764780, 8070692, 10088365, 11529560, 16141384, 20176730, 40353460, 80706920]

約数ペア:

[(1, 80706920), (2, 40353460), (4, 20176730), (5, 16141384), (7, 11529560), (8, 10088365), (10, 8070692), (14, 5764780), (20, 4035346), (28, 2882390), (35, 2305912), (40, 2017673), (49, 1647080), (56, 1441195), (70, 1152956), (98, 823540), (140, 576478), (196, 411770), (245, 329416), (280, 288239), (392, 205885), (490, 164708), (980, 82354), (1960, 41177)]