20151320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{911}}^1$

素因数の和:1008

約数の個数: 64

約数和(自身を含む): 52531200

約数和(自身を除く): 32379880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 79, 140, 158, 280, 316, 395, 553, 632, 790, 911, 1106, 1580, 1822, 2212, 2765, 3160, 3644, 4424, 4555, 5530, 6377, 7288, 9110, 11060, 12754, 18220, 22120, 25508, 31885, 36440, 51016, 63770, 71969, 127540, 143938, 255080, 287876, 359845, 503783, 575752, 719690, 1007566, 1439380, 2015132, 2518915, 2878760, 4030264, 5037830, 10075660, 20151320]

約数ペア:

[(1, 20151320), (2, 10075660), (4, 5037830), (5, 4030264), (7, 2878760), (8, 2518915), (10, 2015132), (14, 1439380), (20, 1007566), (28, 719690), (35, 575752), (40, 503783), (56, 359845), (70, 287876), (79, 255080), (140, 143938), (158, 127540), (280, 71969), (316, 63770), (395, 51016), (553, 36440), (632, 31885), (790, 25508), (911, 22120), (1106, 18220), (1580, 12754), (1822, 11060), (2212, 9110), (2765, 7288), (3160, 6377), (3644, 5530), (4424, 4555)]