15991960

素因数分解:

$2^3\times 5^1\times {\mathrm{541}}^1\times {\mathrm{739}}^1$

素因数の和:1291

約数の個数: 32

約数和(自身を含む): 36097200

約数和(自身を除く): 20105240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 541, 739, 1082, 1478, 2164, 2705, 2956, 3695, 4328, 5410, 5912, 7390, 10820, 14780, 21640, 29560, 399799, 799598, 1599196, 1998995, 3198392, 3997990, 7995980, 15991960]

約数ペア:

[(1, 15991960), (2, 7995980), (4, 3997990), (5, 3198392), (8, 1998995), (10, 1599196), (20, 799598), (40, 399799), (541, 29560), (739, 21640), (1082, 14780), (1478, 10820), (2164, 7390), (2705, 5912), (2956, 5410), (3695, 4328)]