51305020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{353}}^1$

素因数の和:431

約数の個数: 72

約数和(自身を含む): 119717136

約数和(自身を除く): 68412116

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 169, 172, 215, 260, 338, 353, 430, 559, 676, 706, 845, 860, 1118, 1412, 1690, 1765, 2236, 2795, 3380, 3530, 4589, 5590, 7060, 7267, 9178, 11180, 14534, 15179, 18356, 22945, 29068, 30358, 36335, 45890, 59657, 60716, 72670, 75895, 91780, 119314, 145340, 151790, 197327, 238628, 298285, 303580, 394654, 596570, 789308, 986635, 1193140, 1973270, 2565251, 3946540, 5130502, 10261004, 12826255, 25652510, 51305020]

約数ペア:

[(1, 51305020), (2, 25652510), (4, 12826255), (5, 10261004), (10, 5130502), (13, 3946540), (20, 2565251), (26, 1973270), (43, 1193140), (52, 986635), (65, 789308), (86, 596570), (130, 394654), (169, 303580), (172, 298285), (215, 238628), (260, 197327), (338, 151790), (353, 145340), (430, 119314), (559, 91780), (676, 75895), (706, 72670), (845, 60716), (860, 59657), (1118, 45890), (1412, 36335), (1690, 30358), (1765, 29068), (2236, 22945), (2795, 18356), (3380, 15179), (3530, 14534), (4589, 11180), (5590, 9178), (7060, 7267)]