263161720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{153001}}^1$

素因数の和:153055

約数の個数: 32

約数和(自身を含む): 605887920

約数和(自身を除く): 342726200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 153001, 306002, 612004, 765005, 1224008, 1530010, 3060020, 6120040, 6579043, 13158086, 26316172, 32895215, 52632344, 65790430, 131580860, 263161720]

約数ペア:

[(1, 263161720), (2, 131580860), (4, 65790430), (5, 52632344), (8, 32895215), (10, 26316172), (20, 13158086), (40, 6579043), (43, 6120040), (86, 3060020), (172, 1530010), (215, 1224008), (344, 765005), (430, 612004), (860, 306002), (1720, 153001)]