20987340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31799}}^1$

素因数の和:31822

約数の個数: 48

約数和(自身を含む): 64108800

約数和(自身を除く): 43121460

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 31799, 63598, 95397, 127196, 158995, 190794, 317990, 349789, 381588, 476985, 635980, 699578, 953970, 1049367, 1399156, 1748945, 1907940, 2098734, 3497890, 4197468, 5246835, 6995780, 10493670, 20987340]

約数ペア:

[(1, 20987340), (2, 10493670), (3, 6995780), (4, 5246835), (5, 4197468), (6, 3497890), (10, 2098734), (11, 1907940), (12, 1748945), (15, 1399156), (20, 1049367), (22, 953970), (30, 699578), (33, 635980), (44, 476985), (55, 381588), (60, 349789), (66, 317990), (110, 190794), (132, 158995), (165, 127196), (220, 95397), (330, 63598), (660, 31799)]