401564080

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{161921}}^1$

素因数の和:161965

約数の個数: 40

約数和(自身を含む): 963759744

約数和(自身を除く): 562195664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 161921, 323842, 647684, 809605, 1295368, 1619210, 2590736, 3238420, 5019551, 6476840, 10039102, 12953680, 20078204, 25097755, 40156408, 50195510, 80312816, 100391020, 200782040, 401564080]

約数ペア:

[(1, 401564080), (2, 200782040), (4, 100391020), (5, 80312816), (8, 50195510), (10, 40156408), (16, 25097755), (20, 20078204), (31, 12953680), (40, 10039102), (62, 6476840), (80, 5019551), (124, 3238420), (155, 2590736), (248, 1619210), (310, 1295368), (496, 809605), (620, 647684), (1240, 323842), (2480, 161921)]