18664280

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12611}}^1$

素因数の和:12659

約数の個数: 32

約数和(自身を含む): 43133040

約数和(自身を除く): 24468760

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 12611, 25222, 50444, 63055, 100888, 126110, 252220, 466607, 504440, 933214, 1866428, 2333035, 3732856, 4666070, 9332140, 18664280]

約数ペア:

[(1, 18664280), (2, 9332140), (4, 4666070), (5, 3732856), (8, 2333035), (10, 1866428), (20, 933214), (37, 504440), (40, 466607), (74, 252220), (148, 126110), (185, 100888), (296, 63055), (370, 50444), (740, 25222), (1480, 12611)]