15881944

素因数分解:

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

素因数の和:740

約数の個数: 48

約数和(自身を含む): 34191720

約数和(自身を除く): 18309776

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 169, 221, 338, 442, 676, 691, 884, 1352, 1382, 1768, 2764, 2873, 5528, 5746, 8983, 11492, 11747, 17966, 22984, 23494, 35932, 46988, 71864, 93976, 116779, 152711, 233558, 305422, 467116, 610844, 934232, 1221688, 1985243, 3970486, 7940972, 15881944]

約数ペア:

[(1, 15881944), (2, 7940972), (4, 3970486), (8, 1985243), (13, 1221688), (17, 934232), (26, 610844), (34, 467116), (52, 305422), (68, 233558), (104, 152711), (136, 116779), (169, 93976), (221, 71864), (338, 46988), (442, 35932), (676, 23494), (691, 22984), (884, 17966), (1352, 11747), (1382, 11492), (1768, 8983), (2764, 5746), (2873, 5528)]