138218680

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{1531}}^1$

素因数の和:1640

約数の個数: 64

約数和(自身を含む): 324845280

約数和(自身を除く): 186626600

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 61, 74, 122, 148, 185, 244, 296, 305, 370, 488, 610, 740, 1220, 1480, 1531, 2257, 2440, 3062, 4514, 6124, 7655, 9028, 11285, 12248, 15310, 18056, 22570, 30620, 45140, 56647, 61240, 90280, 93391, 113294, 186782, 226588, 283235, 373564, 453176, 466955, 566470, 747128, 933910, 1132940, 1867820, 2265880, 3455467, 3735640, 6910934, 13821868, 17277335, 27643736, 34554670, 69109340, 138218680]

約数ペア:

[(1, 138218680), (2, 69109340), (4, 34554670), (5, 27643736), (8, 17277335), (10, 13821868), (20, 6910934), (37, 3735640), (40, 3455467), (61, 2265880), (74, 1867820), (122, 1132940), (148, 933910), (185, 747128), (244, 566470), (296, 466955), (305, 453176), (370, 373564), (488, 283235), (610, 226588), (740, 186782), (1220, 113294), (1480, 93391), (1531, 90280), (2257, 61240), (2440, 56647), (3062, 45140), (4514, 30620), (6124, 22570), (7655, 18056), (9028, 15310), (11285, 12248)]