80421220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{21503}}^1$

素因数の和:21540

約数の個数: 48

約数和(自身を含む): 195084288

約数和(自身を除く): 114663068

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 21503, 43006, 86012, 107515, 215030, 236533, 365551, 430060, 473066, 731102, 946132, 1182665, 1462204, 1827755, 2365330, 3655510, 4021061, 4730660, 7311020, 8042122, 16084244, 20105305, 40210610, 80421220]

約数ペア:

[(1, 80421220), (2, 40210610), (4, 20105305), (5, 16084244), (10, 8042122), (11, 7311020), (17, 4730660), (20, 4021061), (22, 3655510), (34, 2365330), (44, 1827755), (55, 1462204), (68, 1182665), (85, 946132), (110, 731102), (170, 473066), (187, 430060), (220, 365551), (340, 236533), (374, 215030), (748, 107515), (935, 86012), (1870, 43006), (3740, 21503)]