20554440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1091}}^1$

素因数の和:1262

約数の個数: 64

約数和(自身を含む): 62112960

約数和(自身を除く): 41558520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 157, 314, 471, 628, 785, 942, 1091, 1256, 1570, 1884, 2182, 2355, 3140, 3273, 3768, 4364, 4710, 5455, 6280, 6546, 8728, 9420, 10910, 13092, 16365, 18840, 21820, 26184, 32730, 43640, 65460, 130920, 171287, 342574, 513861, 685148, 856435, 1027722, 1370296, 1712870, 2055444, 2569305, 3425740, 4110888, 5138610, 6851480, 10277220, 20554440]

約数ペア:

[(1, 20554440), (2, 10277220), (3, 6851480), (4, 5138610), (5, 4110888), (6, 3425740), (8, 2569305), (10, 2055444), (12, 1712870), (15, 1370296), (20, 1027722), (24, 856435), (30, 685148), (40, 513861), (60, 342574), (120, 171287), (157, 130920), (314, 65460), (471, 43640), (628, 32730), (785, 26184), (942, 21820), (1091, 18840), (1256, 16365), (1570, 13092), (1884, 10910), (2182, 9420), (2355, 8728), (3140, 6546), (3273, 6280), (3768, 5455), (4364, 4710)]