21856432

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:230

約数の個数: 60

約数和(自身を含む): 46972440

約数和(自身を除く): 25116008

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 59, 104, 118, 137, 169, 208, 236, 274, 338, 472, 548, 676, 767, 944, 1096, 1352, 1534, 1781, 2192, 2704, 3068, 3562, 6136, 7124, 8083, 9971, 12272, 14248, 16166, 19942, 23153, 28496, 32332, 39884, 46306, 64664, 79768, 92612, 105079, 129328, 159536, 185224, 210158, 370448, 420316, 840632, 1366027, 1681264, 2732054, 5464108, 10928216, 21856432]

約数ペア:

[(1, 21856432), (2, 10928216), (4, 5464108), (8, 2732054), (13, 1681264), (16, 1366027), (26, 840632), (52, 420316), (59, 370448), (104, 210158), (118, 185224), (137, 159536), (169, 129328), (208, 105079), (236, 92612), (274, 79768), (338, 64664), (472, 46306), (548, 39884), (676, 32332), (767, 28496), (944, 23153), (1096, 19942), (1352, 16166), (1534, 14248), (1781, 12272), (2192, 9971), (2704, 8083), (3068, 7124), (3562, 6136)]