21386136

素因数分解:

$2^3\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:145

約数の個数: 128

約数和(自身を含む): 61585920

約数和(自身を除く): 40199784

約数列:

[1, 2, 3, 4, 6, 8, 12, 17, 23, 24, 34, 43, 46, 51, 53, 68, 69, 86, 92, 102, 106, 129, 136, 138, 159, 172, 184, 204, 212, 258, 276, 318, 344, 391, 408, 424, 516, 552, 636, 731, 782, 901, 989, 1032, 1173, 1219, 1272, 1462, 1564, 1802, 1978, 2193, 2279, 2346, 2438, 2703, 2924, 2967, 3128, 3604, 3657, 3956, 4386, 4558, 4692, 4876, 5406, 5848, 5934, 6837, 7208, 7314, 7912, 8772, 9116, 9384, 9752, 10812, 11868, 13674, 14628, 16813, 17544, 18232, 20723, 21624, 23736, 27348, 29256, 33626, 38743, 41446, 50439, 52417, 54696, 62169, 67252, 77486, 82892, 100878, 104834, 116229, 124338, 134504, 154972, 157251, 165784, 201756, 209668, 232458, 248676, 309944, 314502, 403512, 419336, 464916, 497352, 629004, 891089, 929832, 1258008, 1782178, 2673267, 3564356, 5346534, 7128712, 10693068, 21386136]

約数ペア:

[(1, 21386136), (2, 10693068), (3, 7128712), (4, 5346534), (6, 3564356), (8, 2673267), (12, 1782178), (17, 1258008), (23, 929832), (24, 891089), (34, 629004), (43, 497352), (46, 464916), (51, 419336), (53, 403512), (68, 314502), (69, 309944), (86, 248676), (92, 232458), (102, 209668), (106, 201756), (129, 165784), (136, 157251), (138, 154972), (159, 134504), (172, 124338), (184, 116229), (204, 104834), (212, 100878), (258, 82892), (276, 77486), (318, 67252), (344, 62169), (391, 54696), (408, 52417), (424, 50439), (516, 41446), (552, 38743), (636, 33626), (731, 29256), (782, 27348), (901, 23736), (989, 21624), (1032, 20723), (1173, 18232), (1219, 17544), (1272, 16813), (1462, 14628), (1564, 13674), (1802, 11868), (1978, 10812), (2193, 9752), (2279, 9384), (2346, 9116), (2438, 8772), (2703, 7912), (2924, 7314), (2967, 7208), (3128, 6837), (3604, 5934), (3657, 5848), (3956, 5406), (4386, 4876), (4558, 4692)]