18932968

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{431}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 39787200

約数和(自身を除く): 20854232

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 289, 323, 431, 578, 646, 862, 1156, 1292, 1724, 2312, 2584, 3448, 5491, 7327, 8189, 10982, 14654, 16378, 21964, 29308, 32756, 43928, 58616, 65512, 124559, 139213, 249118, 278426, 498236, 556852, 996472, 1113704, 2366621, 4733242, 9466484, 18932968]

約数ペア:

[(1, 18932968), (2, 9466484), (4, 4733242), (8, 2366621), (17, 1113704), (19, 996472), (34, 556852), (38, 498236), (68, 278426), (76, 249118), (136, 139213), (152, 124559), (289, 65512), (323, 58616), (431, 43928), (578, 32756), (646, 29308), (862, 21964), (1156, 16378), (1292, 14654), (1724, 10982), (2312, 8189), (2584, 7327), (3448, 5491)]