21618766

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:436

約数の個数: 32

約数和(自身を含む): 36435168

約数和(自身を除く): 14816402

約数列:

[1, 2, 13, 26, 43, 61, 86, 122, 317, 559, 634, 793, 1118, 1586, 2623, 4121, 5246, 8242, 13631, 19337, 27262, 34099, 38674, 68198, 177203, 251381, 354406, 502762, 831491, 1662982, 10809383, 21618766]

約数ペア:

[(1, 21618766), (2, 10809383), (13, 1662982), (26, 831491), (43, 502762), (61, 354406), (86, 251381), (122, 177203), (317, 68198), (559, 38674), (634, 34099), (793, 27262), (1118, 19337), (1586, 13631), (2623, 8242), (4121, 5246)]