129071780

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1\times {\mathrm{541}}^1$

素因数の和:780

約数の個数: 48

約数和(自身を含む): 276810240

約数和(自身を除く): 147738460

約数列:

[1, 2, 4, 5, 10, 20, 79, 151, 158, 302, 316, 395, 541, 604, 755, 790, 1082, 1510, 1580, 2164, 2705, 3020, 5410, 10820, 11929, 23858, 42739, 47716, 59645, 81691, 85478, 119290, 163382, 170956, 213695, 238580, 326764, 408455, 427390, 816910, 854780, 1633820, 6453589, 12907178, 25814356, 32267945, 64535890, 129071780]

約数ペア:

[(1, 129071780), (2, 64535890), (4, 32267945), (5, 25814356), (10, 12907178), (20, 6453589), (79, 1633820), (151, 854780), (158, 816910), (302, 427390), (316, 408455), (395, 326764), (541, 238580), (604, 213695), (755, 170956), (790, 163382), (1082, 119290), (1510, 85478), (1580, 81691), (2164, 59645), (2705, 47716), (3020, 42739), (5410, 23858), (10820, 11929)]