18437900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{1091}}^1$

素因数の和:1131

約数の個数: 54

約数和(自身を含む): 43364412

約数和(自身を除く): 24926512

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 169, 260, 325, 338, 650, 676, 845, 1091, 1300, 1690, 2182, 3380, 4225, 4364, 5455, 8450, 10910, 14183, 16900, 21820, 27275, 28366, 54550, 56732, 70915, 109100, 141830, 184379, 283660, 354575, 368758, 709150, 737516, 921895, 1418300, 1843790, 3687580, 4609475, 9218950, 18437900]

約数ペア:

[(1, 18437900), (2, 9218950), (4, 4609475), (5, 3687580), (10, 1843790), (13, 1418300), (20, 921895), (25, 737516), (26, 709150), (50, 368758), (52, 354575), (65, 283660), (100, 184379), (130, 141830), (169, 109100), (260, 70915), (325, 56732), (338, 54550), (650, 28366), (676, 27275), (845, 21820), (1091, 16900), (1300, 14183), (1690, 10910), (2182, 8450), (3380, 5455), (4225, 4364)]