19727500

素因数分解:

$2^2\times 5^4\times {\mathrm{13}}^1\times {\mathrm{607}}^1$

素因数の和:644

約数の個数: 60

約数和(自身を含む): 46535104

約数和(自身を除く): 26807604

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 607, 625, 650, 1214, 1250, 1300, 1625, 2428, 2500, 3035, 3250, 6070, 6500, 7891, 8125, 12140, 15175, 15782, 16250, 30350, 31564, 32500, 39455, 60700, 75875, 78910, 151750, 157820, 197275, 303500, 379375, 394550, 758750, 789100, 986375, 1517500, 1972750, 3945500, 4931875, 9863750, 19727500]

約数ペア:

[(1, 19727500), (2, 9863750), (4, 4931875), (5, 3945500), (10, 1972750), (13, 1517500), (20, 986375), (25, 789100), (26, 758750), (50, 394550), (52, 379375), (65, 303500), (100, 197275), (125, 157820), (130, 151750), (250, 78910), (260, 75875), (325, 60700), (500, 39455), (607, 32500), (625, 31564), (650, 30350), (1214, 16250), (1250, 15782), (1300, 15175), (1625, 12140), (2428, 8125), (2500, 7891), (3035, 6500), (3250, 6070)]