20879638

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{487}}^1$

素因数の和:616

約数の個数: 32

約数和(自身を含む): 36154944

約数和(自身を除く): 15275306

約数列:

[1, 2, 13, 17, 26, 34, 97, 194, 221, 442, 487, 974, 1261, 1649, 2522, 3298, 6331, 8279, 12662, 16558, 21437, 42874, 47239, 94478, 107627, 215254, 614107, 803063, 1228214, 1606126, 10439819, 20879638]

約数ペア:

[(1, 20879638), (2, 10439819), (13, 1606126), (17, 1228214), (26, 803063), (34, 614107), (97, 215254), (194, 107627), (221, 94478), (442, 47239), (487, 42874), (974, 21437), (1261, 16558), (1649, 12662), (2522, 8279), (3298, 6331)]