20442977420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{387031}}^1$

素因数の和:387198

約数の個数: 48

約数和(自身を含む): 45514963200

約数和(自身を除く): 25071985780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 139, 190, 278, 380, 556, 695, 1390, 2641, 2780, 5282, 10564, 13205, 26410, 52820, 387031, 774062, 1548124, 1935155, 3870310, 7353589, 7740620, 14707178, 29414356, 36767945, 53797309, 73535890, 107594618, 147071780, 215189236, 268986545, 537973090, 1022148871, 1075946180, 2044297742, 4088595484, 5110744355, 10221488710, 20442977420]

約数ペア:

[(1, 20442977420), (2, 10221488710), (4, 5110744355), (5, 4088595484), (10, 2044297742), (19, 1075946180), (20, 1022148871), (38, 537973090), (76, 268986545), (95, 215189236), (139, 147071780), (190, 107594618), (278, 73535890), (380, 53797309), (556, 36767945), (695, 29414356), (1390, 14707178), (2641, 7740620), (2780, 7353589), (5282, 3870310), (10564, 1935155), (13205, 1548124), (26410, 774062), (52820, 387031)]