206815960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{397723}}^1$

素因数の和:397747

約数の個数: 32

約数和(自身を含む): 501132240

約数和(自身を除く): 294316280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 397723, 795446, 1590892, 1988615, 3181784, 3977230, 5170399, 7954460, 10340798, 15908920, 20681596, 25851995, 41363192, 51703990, 103407980, 206815960]

約数ペア:

[(1, 206815960), (2, 103407980), (4, 51703990), (5, 41363192), (8, 25851995), (10, 20681596), (13, 15908920), (20, 10340798), (26, 7954460), (40, 5170399), (52, 3977230), (65, 3181784), (104, 1988615), (130, 1590892), (260, 795446), (520, 397723)]