21597776

素因数分解:

$2^4\times {\mathrm{59}}^1\times {\mathrm{137}}^1\times {\mathrm{167}}^1$

素因数の和:371

約数の個数: 40

約数和(自身を含む): 43122240

約数和(自身を除く): 21524464

約数列:

[1, 2, 4, 8, 16, 59, 118, 137, 167, 236, 274, 334, 472, 548, 668, 944, 1096, 1336, 2192, 2672, 8083, 9853, 16166, 19706, 22879, 32332, 39412, 45758, 64664, 78824, 91516, 129328, 157648, 183032, 366064, 1349861, 2699722, 5399444, 10798888, 21597776]

約数ペア:

[(1, 21597776), (2, 10798888), (4, 5399444), (8, 2699722), (16, 1349861), (59, 366064), (118, 183032), (137, 157648), (167, 129328), (236, 91516), (274, 78824), (334, 64664), (472, 45758), (548, 39412), (668, 32332), (944, 22879), (1096, 19706), (1336, 16166), (2192, 9853), (2672, 8083)]