20750980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{233}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 45090864

約数和(自身を除く): 24339884

約数列:

[1, 2, 4, 5, 10, 20, 61, 73, 122, 146, 233, 244, 292, 305, 365, 466, 610, 730, 932, 1165, 1220, 1460, 2330, 4453, 4660, 8906, 14213, 17009, 17812, 22265, 28426, 34018, 44530, 56852, 68036, 71065, 85045, 89060, 142130, 170090, 284260, 340180, 1037549, 2075098, 4150196, 5187745, 10375490, 20750980]

約数ペア:

[(1, 20750980), (2, 10375490), (4, 5187745), (5, 4150196), (10, 2075098), (20, 1037549), (61, 340180), (73, 284260), (122, 170090), (146, 142130), (233, 89060), (244, 85045), (292, 71065), (305, 68036), (365, 56852), (466, 44530), (610, 34018), (730, 28426), (932, 22265), (1165, 17812), (1220, 17009), (1460, 14213), (2330, 8906), (4453, 4660)]