51816440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{397}}^1$

素因数の和:672

約数の個数: 64

約数和(自身を含む): 126372960

約数和(自身を除く): 74556520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 251, 260, 397, 502, 520, 794, 1004, 1255, 1588, 1985, 2008, 2510, 3176, 3263, 3970, 5020, 5161, 6526, 7940, 10040, 10322, 13052, 15880, 16315, 20644, 25805, 26104, 32630, 41288, 51610, 65260, 99647, 103220, 130520, 199294, 206440, 398588, 498235, 797176, 996470, 1295411, 1992940, 2590822, 3985880, 5181644, 6477055, 10363288, 12954110, 25908220, 51816440]

約数ペア:

[(1, 51816440), (2, 25908220), (4, 12954110), (5, 10363288), (8, 6477055), (10, 5181644), (13, 3985880), (20, 2590822), (26, 1992940), (40, 1295411), (52, 996470), (65, 797176), (104, 498235), (130, 398588), (251, 206440), (260, 199294), (397, 130520), (502, 103220), (520, 99647), (794, 65260), (1004, 51610), (1255, 41288), (1588, 32630), (1985, 26104), (2008, 25805), (2510, 20644), (3176, 16315), (3263, 15880), (3970, 13052), (5020, 10322), (5161, 10040), (6526, 7940)]