81772900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{941}}^1$

素因数の和:1045

約数の個数: 72

約数和(自身を含む): 196237440

約数和(自身を除く): 114464540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 79, 100, 110, 158, 220, 275, 316, 395, 550, 790, 869, 941, 1100, 1580, 1738, 1882, 1975, 3476, 3764, 3950, 4345, 4705, 7900, 8690, 9410, 10351, 17380, 18820, 20702, 21725, 23525, 41404, 43450, 47050, 51755, 74339, 86900, 94100, 103510, 148678, 207020, 258775, 297356, 371695, 517550, 743390, 817729, 1035100, 1486780, 1635458, 1858475, 3270916, 3716950, 4088645, 7433900, 8177290, 16354580, 20443225, 40886450, 81772900]

約数ペア:

[(1, 81772900), (2, 40886450), (4, 20443225), (5, 16354580), (10, 8177290), (11, 7433900), (20, 4088645), (22, 3716950), (25, 3270916), (44, 1858475), (50, 1635458), (55, 1486780), (79, 1035100), (100, 817729), (110, 743390), (158, 517550), (220, 371695), (275, 297356), (316, 258775), (395, 207020), (550, 148678), (790, 103510), (869, 94100), (941, 86900), (1100, 74339), (1580, 51755), (1738, 47050), (1882, 43450), (1975, 41404), (3476, 23525), (3764, 21725), (3950, 20702), (4345, 18820), (4705, 17380), (7900, 10351), (8690, 9410)]