51210380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:283

約数の個数: 72

約数和(自身を含む): 118364400

約数和(自身を除く): 67154020

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 139, 169, 218, 260, 278, 338, 436, 545, 556, 676, 695, 845, 1090, 1390, 1417, 1690, 1807, 2180, 2780, 2834, 3380, 3614, 5668, 7085, 7228, 9035, 14170, 15151, 18070, 18421, 23491, 28340, 30302, 36140, 36842, 46982, 60604, 73684, 75755, 92105, 93964, 117455, 151510, 184210, 196963, 234910, 303020, 368420, 393926, 469820, 787852, 984815, 1969630, 2560519, 3939260, 5121038, 10242076, 12802595, 25605190, 51210380]

約数ペア:

[(1, 51210380), (2, 25605190), (4, 12802595), (5, 10242076), (10, 5121038), (13, 3939260), (20, 2560519), (26, 1969630), (52, 984815), (65, 787852), (109, 469820), (130, 393926), (139, 368420), (169, 303020), (218, 234910), (260, 196963), (278, 184210), (338, 151510), (436, 117455), (545, 93964), (556, 92105), (676, 75755), (695, 73684), (845, 60604), (1090, 46982), (1390, 36842), (1417, 36140), (1690, 30302), (1807, 28340), (2180, 23491), (2780, 18421), (2834, 18070), (3380, 15151), (3614, 14170), (5668, 9035), (7085, 7228)]