28228180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{193}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 61012224

約数和(自身を除く): 32784044

約数列:

[1, 2, 4, 5, 10, 20, 71, 103, 142, 193, 206, 284, 355, 386, 412, 515, 710, 772, 965, 1030, 1420, 1930, 2060, 3860, 7313, 13703, 14626, 19879, 27406, 29252, 36565, 39758, 54812, 68515, 73130, 79516, 99395, 137030, 146260, 198790, 274060, 397580, 1411409, 2822818, 5645636, 7057045, 14114090, 28228180]

約数ペア:

[(1, 28228180), (2, 14114090), (4, 7057045), (5, 5645636), (10, 2822818), (20, 1411409), (71, 397580), (103, 274060), (142, 198790), (193, 146260), (206, 137030), (284, 99395), (355, 79516), (386, 73130), (412, 68515), (515, 54812), (710, 39758), (772, 36565), (965, 29252), (1030, 27406), (1420, 19879), (1930, 14626), (2060, 13703), (3860, 7313)]