20585980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{317}}^1$

素因数の和:534

約数の個数: 48

約数和(自身を含む): 46158336

約数和(自身を除く): 25572356

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 191, 317, 340, 382, 634, 764, 955, 1268, 1585, 1910, 3170, 3247, 3820, 5389, 6340, 6494, 10778, 12988, 16235, 21556, 26945, 32470, 53890, 60547, 64940, 107780, 121094, 242188, 302735, 605470, 1029299, 1210940, 2058598, 4117196, 5146495, 10292990, 20585980]

約数ペア:

[(1, 20585980), (2, 10292990), (4, 5146495), (5, 4117196), (10, 2058598), (17, 1210940), (20, 1029299), (34, 605470), (68, 302735), (85, 242188), (170, 121094), (191, 107780), (317, 64940), (340, 60547), (382, 53890), (634, 32470), (764, 26945), (955, 21556), (1268, 16235), (1585, 12988), (1910, 10778), (3170, 6494), (3247, 6340), (3820, 5389)]