5161000

素因数分解:

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

素因数の和:431

約数の個数: 64

約数和(自身を含む): 13038480

約数和(自身を除く): 7877480

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, 650, 794, 1000, 1300, 1588, 1625, 1985, 2600, 3176, 3250, 3970, 5161, 6500, 7940, 9925, 10322, 13000, 15880, 19850, 20644, 25805, 39700, 41288, 49625, 51610, 79400, 99250, 103220, 129025, 198500, 206440, 258050, 397000, 516100, 645125, 1032200, 1290250, 2580500, 5161000]

約数ペア:

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