25805000

素因数分解:

$2^3\times 5^4\times {\mathrm{13}}^1\times {\mathrm{397}}^1$

素因数の和:436

約数の個数: 80

約数和(自身を含む): 65275980

約数和(自身を除く): 39470980

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 397, 500, 520, 625, 650, 794, 1000, 1250, 1300, 1588, 1625, 1985, 2500, 2600, 3176, 3250, 3970, 5000, 5161, 6500, 7940, 8125, 9925, 10322, 13000, 15880, 16250, 19850, 20644, 25805, 32500, 39700, 41288, 49625, 51610, 65000, 79400, 99250, 103220, 129025, 198500, 206440, 248125, 258050, 397000, 496250, 516100, 645125, 992500, 1032200, 1290250, 1985000, 2580500, 3225625, 5161000, 6451250, 12902500, 25805000]

約数ペア:

[(1, 25805000), (2, 12902500), (4, 6451250), (5, 5161000), (8, 3225625), (10, 2580500), (13, 1985000), (20, 1290250), (25, 1032200), (26, 992500), (40, 645125), (50, 516100), (52, 496250), (65, 397000), (100, 258050), (104, 248125), (125, 206440), (130, 198500), (200, 129025), (250, 103220), (260, 99250), (325, 79400), (397, 65000), (500, 51610), (520, 49625), (625, 41288), (650, 39700), (794, 32500), (1000, 25805), (1250, 20644), (1300, 19850), (1588, 16250), (1625, 15880), (1985, 13000), (2500, 10322), (2600, 9925), (3176, 8125), (3250, 7940), (3970, 6500), (5000, 5161)]