21540456

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{541}}^1$

素因数の和:639

約数の個数: 96

約数和(自身を含む): 67641600

約数和(自身を除く): 46101144

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 56, 63, 72, 79, 84, 126, 158, 168, 237, 252, 316, 474, 504, 541, 553, 632, 711, 948, 1082, 1106, 1422, 1623, 1659, 1896, 2164, 2212, 2844, 3246, 3318, 3787, 4328, 4424, 4869, 4977, 5688, 6492, 6636, 7574, 9738, 9954, 11361, 12984, 13272, 15148, 19476, 19908, 22722, 30296, 34083, 38952, 39816, 42739, 45444, 68166, 85478, 90888, 128217, 136332, 170956, 256434, 272664, 299173, 341912, 384651, 512868, 598346, 769302, 897519, 1025736, 1196692, 1538604, 1795038, 2393384, 2692557, 3077208, 3590076, 5385114, 7180152, 10770228, 21540456]

約数ペア:

[(1, 21540456), (2, 10770228), (3, 7180152), (4, 5385114), (6, 3590076), (7, 3077208), (8, 2692557), (9, 2393384), (12, 1795038), (14, 1538604), (18, 1196692), (21, 1025736), (24, 897519), (28, 769302), (36, 598346), (42, 512868), (56, 384651), (63, 341912), (72, 299173), (79, 272664), (84, 256434), (126, 170956), (158, 136332), (168, 128217), (237, 90888), (252, 85478), (316, 68166), (474, 45444), (504, 42739), (541, 39816), (553, 38952), (632, 34083), (711, 30296), (948, 22722), (1082, 19908), (1106, 19476), (1422, 15148), (1623, 13272), (1659, 12984), (1896, 11361), (2164, 9954), (2212, 9738), (2844, 7574), (3246, 6636), (3318, 6492), (3787, 5688), (4328, 4977), (4424, 4869)]