21804426

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1321}}^1$

素因数の和:1467

約数の個数: 48

約数和(自身を含む): 54445248

約数和(自身を除く): 32640822

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 131, 262, 393, 786, 917, 1179, 1321, 1834, 2358, 2642, 2751, 3963, 5502, 7926, 8253, 9247, 11889, 16506, 18494, 23778, 27741, 55482, 83223, 166446, 173051, 346102, 519153, 1038306, 1211357, 1557459, 2422714, 3114918, 3634071, 7268142, 10902213, 21804426]

約数ペア:

[(1, 21804426), (2, 10902213), (3, 7268142), (6, 3634071), (7, 3114918), (9, 2422714), (14, 1557459), (18, 1211357), (21, 1038306), (42, 519153), (63, 346102), (126, 173051), (131, 166446), (262, 83223), (393, 55482), (786, 27741), (917, 23778), (1179, 18494), (1321, 16506), (1834, 11889), (2358, 9247), (2642, 8253), (2751, 7926), (3963, 5502)]