20462000

素因数分解:

$2^4\times 5^3\times {\mathrm{13}}^1\times {\mathrm{787}}^1$

素因数の和:823

約数の個数: 80

約数和(自身を含む): 53350752

約数和(自身を除く): 32888752

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 125, 130, 200, 208, 250, 260, 325, 400, 500, 520, 650, 787, 1000, 1040, 1300, 1574, 1625, 2000, 2600, 3148, 3250, 3935, 5200, 6296, 6500, 7870, 10231, 12592, 13000, 15740, 19675, 20462, 26000, 31480, 39350, 40924, 51155, 62960, 78700, 81848, 98375, 102310, 157400, 163696, 196750, 204620, 255775, 314800, 393500, 409240, 511550, 787000, 818480, 1023100, 1278875, 1574000, 2046200, 2557750, 4092400, 5115500, 10231000, 20462000]

約数ペア:

[(1, 20462000), (2, 10231000), (4, 5115500), (5, 4092400), (8, 2557750), (10, 2046200), (13, 1574000), (16, 1278875), (20, 1023100), (25, 818480), (26, 787000), (40, 511550), (50, 409240), (52, 393500), (65, 314800), (80, 255775), (100, 204620), (104, 196750), (125, 163696), (130, 157400), (200, 102310), (208, 98375), (250, 81848), (260, 78700), (325, 62960), (400, 51155), (500, 40924), (520, 39350), (650, 31480), (787, 26000), (1000, 20462), (1040, 19675), (1300, 15740), (1574, 13000), (1625, 12592), (2000, 10231), (2600, 7870), (3148, 6500), (3250, 6296), (3935, 5200)]