1221688

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{691}}^1$

素因数の和:727

約数の個数: 32

約数和(自身を含む): 2615760

約数和(自身を除く): 1394072

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 442, 691, 884, 1382, 1768, 2764, 5528, 8983, 11747, 17966, 23494, 35932, 46988, 71864, 93976, 152711, 305422, 610844, 1221688]

約数ペア:

[(1, 1221688), (2, 610844), (4, 305422), (8, 152711), (13, 93976), (17, 71864), (26, 46988), (34, 35932), (52, 23494), (68, 17966), (104, 11747), (136, 8983), (221, 5528), (442, 2764), (691, 1768), (884, 1382)]