64505720

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{22091}}^1$

素因数の和:22175

約数の個数: 32

約数和(自身を含む): 147132720

約数和(自身を除く): 82627000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 22091, 44182, 88364, 110455, 176728, 220910, 441820, 883640, 1612643, 3225286, 6450572, 8063215, 12901144, 16126430, 32252860, 64505720]

約数ペア:

[(1, 64505720), (2, 32252860), (4, 16126430), (5, 12901144), (8, 8063215), (10, 6450572), (20, 3225286), (40, 1612643), (73, 883640), (146, 441820), (292, 220910), (365, 176728), (584, 110455), (730, 88364), (1460, 44182), (2920, 22091)]