28878980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3583}}^1$

素因数の和:3636

約数の個数: 48

約数和(自身を含む): 67436544

約数和(自身を除く): 38557564

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 3583, 4030, 7166, 8060, 14332, 17915, 35830, 46579, 71660, 93158, 111073, 186316, 222146, 232895, 444292, 465790, 555365, 931580, 1110730, 1443949, 2221460, 2887898, 5775796, 7219745, 14439490, 28878980]

約数ペア:

[(1, 28878980), (2, 14439490), (4, 7219745), (5, 5775796), (10, 2887898), (13, 2221460), (20, 1443949), (26, 1110730), (31, 931580), (52, 555365), (62, 465790), (65, 444292), (124, 232895), (130, 222146), (155, 186316), (260, 111073), (310, 93158), (403, 71660), (620, 46579), (806, 35830), (1612, 17915), (2015, 14332), (3583, 8060), (4030, 7166)]