131273240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{631}}^1\times {\mathrm{743}}^1$

素因数の和:1392

約数の個数: 64

約数和(自身を含む): 338549760

約数和(自身を除く): 207276520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 631, 743, 1262, 1486, 2524, 2972, 3155, 3715, 4417, 5048, 5201, 5944, 6310, 7430, 8834, 10402, 12620, 14860, 17668, 20804, 22085, 25240, 26005, 29720, 35336, 41608, 44170, 52010, 88340, 104020, 176680, 208040, 468833, 937666, 1875332, 2344165, 3281831, 3750664, 4688330, 6563662, 9376660, 13127324, 16409155, 18753320, 26254648, 32818310, 65636620, 131273240]

約数ペア:

[(1, 131273240), (2, 65636620), (4, 32818310), (5, 26254648), (7, 18753320), (8, 16409155), (10, 13127324), (14, 9376660), (20, 6563662), (28, 4688330), (35, 3750664), (40, 3281831), (56, 2344165), (70, 1875332), (140, 937666), (280, 468833), (631, 208040), (743, 176680), (1262, 104020), (1486, 88340), (2524, 52010), (2972, 44170), (3155, 41608), (3715, 35336), (4417, 29720), (5048, 26005), (5201, 25240), (5944, 22085), (6310, 20804), (7430, 17668), (8834, 14860), (10402, 12620)]