397755760

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{121267}}^1$

素因数の和:121321

約数の個数: 40

約数和(自身を含む): 947345616

約数和(自身を除く): 549589856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 121267, 242534, 485068, 606335, 970136, 1212670, 1940272, 2425340, 4850680, 4971947, 9701360, 9943894, 19887788, 24859735, 39775576, 49719470, 79551152, 99438940, 198877880, 397755760]

約数ペア:

[(1, 397755760), (2, 198877880), (4, 99438940), (5, 79551152), (8, 49719470), (10, 39775576), (16, 24859735), (20, 19887788), (40, 9943894), (41, 9701360), (80, 4971947), (82, 4850680), (164, 2425340), (205, 1940272), (328, 1212670), (410, 970136), (656, 606335), (820, 485068), (1640, 242534), (3280, 121267)]