64785500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{9967}}^1$

素因数の和:9999

約数の個数: 48

約数和(自身を含む): 152390784

約数和(自身を除く): 87605284

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3250, 6500, 9967, 19934, 39868, 49835, 99670, 129571, 199340, 249175, 259142, 498350, 518284, 647855, 996700, 1245875, 1295710, 2491750, 2591420, 3239275, 4983500, 6478550, 12957100, 16196375, 32392750, 64785500]

約数ペア:

[(1, 64785500), (2, 32392750), (4, 16196375), (5, 12957100), (10, 6478550), (13, 4983500), (20, 3239275), (25, 2591420), (26, 2491750), (50, 1295710), (52, 1245875), (65, 996700), (100, 647855), (125, 518284), (130, 498350), (250, 259142), (260, 249175), (325, 199340), (500, 129571), (650, 99670), (1300, 49835), (1625, 39868), (3250, 19934), (6500, 9967)]