21301308

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{617}}^1$

素因数の和:771

約数の個数: 72

約数和(自身を含む): 62086752

約数和(自身を除く): 40785444

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 137, 252, 274, 411, 548, 617, 822, 959, 1233, 1234, 1644, 1851, 1918, 2466, 2468, 2877, 3702, 3836, 4319, 4932, 5553, 5754, 7404, 8631, 8638, 11106, 11508, 12957, 17262, 17276, 22212, 25914, 34524, 38871, 51828, 77742, 84529, 155484, 169058, 253587, 338116, 507174, 591703, 760761, 1014348, 1183406, 1521522, 1775109, 2366812, 3043044, 3550218, 5325327, 7100436, 10650654, 21301308]

約数ペア:

[(1, 21301308), (2, 10650654), (3, 7100436), (4, 5325327), (6, 3550218), (7, 3043044), (9, 2366812), (12, 1775109), (14, 1521522), (18, 1183406), (21, 1014348), (28, 760761), (36, 591703), (42, 507174), (63, 338116), (84, 253587), (126, 169058), (137, 155484), (252, 84529), (274, 77742), (411, 51828), (548, 38871), (617, 34524), (822, 25914), (959, 22212), (1233, 17276), (1234, 17262), (1644, 12957), (1851, 11508), (1918, 11106), (2466, 8638), (2468, 8631), (2877, 7404), (3702, 5754), (3836, 5553), (4319, 4932)]