20908530

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{311}}^1$

素因数の和:413

約数の個数: 80

約数和(自身を含む): 57081024

約数和(自身を除く): 36172494

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 83, 90, 135, 162, 166, 249, 270, 311, 405, 415, 498, 622, 747, 810, 830, 933, 1245, 1494, 1555, 1866, 2241, 2490, 2799, 3110, 3735, 4482, 4665, 5598, 6723, 7470, 8397, 9330, 11205, 13446, 13995, 16794, 22410, 25191, 25813, 27990, 33615, 41985, 50382, 51626, 67230, 77439, 83970, 125955, 129065, 154878, 232317, 251910, 258130, 387195, 464634, 696951, 774390, 1161585, 1393902, 2090853, 2323170, 3484755, 4181706, 6969510, 10454265, 20908530]

約数ペア:

[(1, 20908530), (2, 10454265), (3, 6969510), (5, 4181706), (6, 3484755), (9, 2323170), (10, 2090853), (15, 1393902), (18, 1161585), (27, 774390), (30, 696951), (45, 464634), (54, 387195), (81, 258130), (83, 251910), (90, 232317), (135, 154878), (162, 129065), (166, 125955), (249, 83970), (270, 77439), (311, 67230), (405, 51626), (415, 50382), (498, 41985), (622, 33615), (747, 27990), (810, 25813), (830, 25191), (933, 22410), (1245, 16794), (1494, 13995), (1555, 13446), (1866, 11205), (2241, 9330), (2490, 8397), (2799, 7470), (3110, 6723), (3735, 5598), (4482, 4665)]