215510020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1987}}^1$

素因数の和:2053

約数の個数: 96

約数和(自身を含む): 541054080

約数和(自身を除く): 325544060

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 29, 34, 44, 55, 58, 68, 85, 110, 116, 145, 170, 187, 220, 290, 319, 340, 374, 493, 580, 638, 748, 935, 986, 1276, 1595, 1870, 1972, 1987, 2465, 3190, 3740, 3974, 4930, 5423, 6380, 7948, 9860, 9935, 10846, 19870, 21692, 21857, 27115, 33779, 39740, 43714, 54230, 57623, 67558, 87428, 108460, 109285, 115246, 135116, 168895, 218570, 230492, 288115, 337790, 371569, 437140, 576230, 633853, 675580, 743138, 979591, 1152460, 1267706, 1486276, 1857845, 1959182, 2535412, 3169265, 3715690, 3918364, 4897955, 6338530, 7431380, 9795910, 10775501, 12677060, 19591820, 21551002, 43102004, 53877505, 107755010, 215510020]

約数ペア:

[(1, 215510020), (2, 107755010), (4, 53877505), (5, 43102004), (10, 21551002), (11, 19591820), (17, 12677060), (20, 10775501), (22, 9795910), (29, 7431380), (34, 6338530), (44, 4897955), (55, 3918364), (58, 3715690), (68, 3169265), (85, 2535412), (110, 1959182), (116, 1857845), (145, 1486276), (170, 1267706), (187, 1152460), (220, 979591), (290, 743138), (319, 675580), (340, 633853), (374, 576230), (493, 437140), (580, 371569), (638, 337790), (748, 288115), (935, 230492), (986, 218570), (1276, 168895), (1595, 135116), (1870, 115246), (1972, 109285), (1987, 108460), (2465, 87428), (3190, 67558), (3740, 57623), (3974, 54230), (4930, 43714), (5423, 39740), (6380, 33779), (7948, 27115), (9860, 21857), (9935, 21692), (10846, 19870)]