381353780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{2659}}^1$

素因数の和:2840

約数の個数: 48

約数和(自身を含む): 820471680

約数和(自身を除く): 439117900

約数列:

[1, 2, 4, 5, 10, 20, 71, 101, 142, 202, 284, 355, 404, 505, 710, 1010, 1420, 2020, 2659, 5318, 7171, 10636, 13295, 14342, 26590, 28684, 35855, 53180, 71710, 143420, 188789, 268559, 377578, 537118, 755156, 943945, 1074236, 1342795, 1887890, 2685590, 3775780, 5371180, 19067689, 38135378, 76270756, 95338445, 190676890, 381353780]

約数ペア:

[(1, 381353780), (2, 190676890), (4, 95338445), (5, 76270756), (10, 38135378), (20, 19067689), (71, 5371180), (101, 3775780), (142, 2685590), (202, 1887890), (284, 1342795), (355, 1074236), (404, 943945), (505, 755156), (710, 537118), (1010, 377578), (1420, 268559), (2020, 188789), (2659, 143420), (5318, 71710), (7171, 53180), (10636, 35855), (13295, 28684), (14342, 26590)]