20663220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8009}}^1$

素因数の和:8064

約数の個数: 48

約数和(自身を含む): 59209920

約数和(自身を除く): 38546700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 8009, 16018, 24027, 32036, 40045, 48054, 80090, 96108, 120135, 160180, 240270, 344387, 480540, 688774, 1033161, 1377548, 1721935, 2066322, 3443870, 4132644, 5165805, 6887740, 10331610, 20663220]

約数ペア:

[(1, 20663220), (2, 10331610), (3, 6887740), (4, 5165805), (5, 4132644), (6, 3443870), (10, 2066322), (12, 1721935), (15, 1377548), (20, 1033161), (30, 688774), (43, 480540), (60, 344387), (86, 240270), (129, 160180), (172, 120135), (215, 96108), (258, 80090), (430, 48054), (516, 40045), (645, 32036), (860, 24027), (1290, 16018), (2580, 8009)]