21559734

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1231}}^1$

素因数の和:1385

約数の個数: 48

約数和(自身を含む): 53813760

約数和(自身を除く): 32254026

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 139, 278, 417, 834, 973, 1231, 1251, 1946, 2462, 2502, 2919, 3693, 5838, 7386, 8617, 8757, 11079, 17234, 17514, 22158, 25851, 51702, 77553, 155106, 171109, 342218, 513327, 1026654, 1197763, 1539981, 2395526, 3079962, 3593289, 7186578, 10779867, 21559734]

約数ペア:

[(1, 21559734), (2, 10779867), (3, 7186578), (6, 3593289), (7, 3079962), (9, 2395526), (14, 1539981), (18, 1197763), (21, 1026654), (42, 513327), (63, 342218), (126, 171109), (139, 155106), (278, 77553), (417, 51702), (834, 25851), (973, 22158), (1231, 17514), (1251, 17234), (1946, 11079), (2462, 8757), (2502, 8617), (2919, 7386), (3693, 5838)]