28272620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{1471}}^1$

素因数の和:1542

約数の個数: 36

約数和(自身を含む): 61391232

約数和(自身を除く): 33118612

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 961, 1471, 1922, 2942, 3844, 4805, 5884, 7355, 9610, 14710, 19220, 29420, 45601, 91202, 182404, 228005, 456010, 912020, 1413631, 2827262, 5654524, 7068155, 14136310, 28272620]

約数ペア:

[(1, 28272620), (2, 14136310), (4, 7068155), (5, 5654524), (10, 2827262), (20, 1413631), (31, 912020), (62, 456010), (124, 228005), (155, 182404), (310, 91202), (620, 45601), (961, 29420), (1471, 19220), (1922, 14710), (2942, 9610), (3844, 7355), (4805, 5884)]