397540240

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{292309}}^1$

素因数の和:292339

約数の個数: 40

約数和(自身を含む): 978653880

約数和(自身を除く): 581113640

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 292309, 584618, 1169236, 1461545, 2338472, 2923090, 4676944, 4969253, 5846180, 9938506, 11692360, 19877012, 23384720, 24846265, 39754024, 49692530, 79508048, 99385060, 198770120, 397540240]

約数ペア:

[(1, 397540240), (2, 198770120), (4, 99385060), (5, 79508048), (8, 49692530), (10, 39754024), (16, 24846265), (17, 23384720), (20, 19877012), (34, 11692360), (40, 9938506), (68, 5846180), (80, 4969253), (85, 4676944), (136, 2923090), (170, 2338472), (272, 1461545), (340, 1169236), (680, 584618), (1360, 292309)]