20512620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1373}}^1$

素因数の和:1471

約数の個数: 72

約数和(自身を含む): 63017136

約数和(自身を除く): 42504516

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 83, 90, 166, 180, 249, 332, 415, 498, 747, 830, 996, 1245, 1373, 1494, 1660, 2490, 2746, 2988, 3735, 4119, 4980, 5492, 6865, 7470, 8238, 12357, 13730, 14940, 16476, 20595, 24714, 27460, 41190, 49428, 61785, 82380, 113959, 123570, 227918, 247140, 341877, 455836, 569795, 683754, 1025631, 1139590, 1367508, 1709385, 2051262, 2279180, 3418770, 4102524, 5128155, 6837540, 10256310, 20512620]

約数ペア:

[(1, 20512620), (2, 10256310), (3, 6837540), (4, 5128155), (5, 4102524), (6, 3418770), (9, 2279180), (10, 2051262), (12, 1709385), (15, 1367508), (18, 1139590), (20, 1025631), (30, 683754), (36, 569795), (45, 455836), (60, 341877), (83, 247140), (90, 227918), (166, 123570), (180, 113959), (249, 82380), (332, 61785), (415, 49428), (498, 41190), (747, 27460), (830, 24714), (996, 20595), (1245, 16476), (1373, 14940), (1494, 13730), (1660, 12357), (2490, 8238), (2746, 7470), (2988, 6865), (3735, 5492), (4119, 4980)]