20796625880

素因数分解:

$2^3\times 5^1\times {\mathrm{359}}^1\times {\mathrm{457}}^1\times {\mathrm{3169}}^1$

素因数の和:3996

約数の個数: 64

約数和(自身を含む): 47040264000

約数和(自身を除く): 26243638120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 359, 457, 718, 914, 1436, 1795, 1828, 2285, 2872, 3169, 3590, 3656, 4570, 6338, 7180, 9140, 12676, 14360, 15845, 18280, 25352, 31690, 63380, 126760, 164063, 328126, 656252, 820315, 1137671, 1312504, 1448233, 1640630, 2275342, 2896466, 3281260, 4550684, 5688355, 5792932, 6562520, 7241165, 9101368, 11376710, 11585864, 14482330, 22753420, 28964660, 45506840, 57929320, 519915647, 1039831294, 2079662588, 2599578235, 4159325176, 5199156470, 10398312940, 20796625880]

約数ペア:

[(1, 20796625880), (2, 10398312940), (4, 5199156470), (5, 4159325176), (8, 2599578235), (10, 2079662588), (20, 1039831294), (40, 519915647), (359, 57929320), (457, 45506840), (718, 28964660), (914, 22753420), (1436, 14482330), (1795, 11585864), (1828, 11376710), (2285, 9101368), (2872, 7241165), (3169, 6562520), (3590, 5792932), (3656, 5688355), (4570, 4550684), (6338, 3281260), (7180, 2896466), (9140, 2275342), (12676, 1640630), (14360, 1448233), (15845, 1312504), (18280, 1137671), (25352, 820315), (31690, 656252), (63380, 328126), (126760, 164063)]