21910651

素因数分解:

$7^1\times {\mathrm{23}}^2\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:211

約数の個数: 24

約数和(自身を含む): 26880224

約数和(自身を除く): 4969573

約数列:

[1, 7, 23, 61, 97, 161, 427, 529, 679, 1403, 2231, 3703, 5917, 9821, 15617, 32269, 41419, 51313, 136091, 225883, 359191, 952637, 3130093, 21910651]

約数ペア:

[(1, 21910651), (7, 3130093), (23, 952637), (61, 359191), (97, 225883), (161, 136091), (427, 51313), (529, 41419), (679, 32269), (1403, 15617), (2231, 9821), (3703, 5917)]