79940380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{353}}^1$

素因数の和:455

約数の個数: 72

約数和(自身を含む): 185017392

約数和(自身を除く): 105077012

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 169, 260, 268, 335, 338, 353, 670, 676, 706, 845, 871, 1340, 1412, 1690, 1742, 1765, 3380, 3484, 3530, 4355, 4589, 7060, 8710, 9178, 11323, 17420, 18356, 22646, 22945, 23651, 45292, 45890, 47302, 56615, 59657, 91780, 94604, 113230, 118255, 119314, 226460, 236510, 238628, 298285, 307463, 473020, 596570, 614926, 1193140, 1229852, 1537315, 3074630, 3997019, 6149260, 7994038, 15988076, 19985095, 39970190, 79940380]

約数ペア:

[(1, 79940380), (2, 39970190), (4, 19985095), (5, 15988076), (10, 7994038), (13, 6149260), (20, 3997019), (26, 3074630), (52, 1537315), (65, 1229852), (67, 1193140), (130, 614926), (134, 596570), (169, 473020), (260, 307463), (268, 298285), (335, 238628), (338, 236510), (353, 226460), (670, 119314), (676, 118255), (706, 113230), (845, 94604), (871, 91780), (1340, 59657), (1412, 56615), (1690, 47302), (1742, 45890), (1765, 45292), (3380, 23651), (3484, 22945), (3530, 22646), (4355, 18356), (4589, 17420), (7060, 11323), (8710, 9178)]