18818320

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:268

約数の個数: 80

約数和(自身を含む): 47126448

約数和(自身を除く): 28308128

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 101, 136, 137, 170, 202, 272, 274, 340, 404, 505, 548, 680, 685, 808, 1010, 1096, 1360, 1370, 1616, 1717, 2020, 2192, 2329, 2740, 3434, 4040, 4658, 5480, 6868, 8080, 8585, 9316, 10960, 11645, 13736, 13837, 17170, 18632, 23290, 27472, 27674, 34340, 37264, 46580, 55348, 68680, 69185, 93160, 110696, 137360, 138370, 186320, 221392, 235229, 276740, 470458, 553480, 940916, 1106960, 1176145, 1881832, 2352290, 3763664, 4704580, 9409160, 18818320]

約数ペア:

[(1, 18818320), (2, 9409160), (4, 4704580), (5, 3763664), (8, 2352290), (10, 1881832), (16, 1176145), (17, 1106960), (20, 940916), (34, 553480), (40, 470458), (68, 276740), (80, 235229), (85, 221392), (101, 186320), (136, 138370), (137, 137360), (170, 110696), (202, 93160), (272, 69185), (274, 68680), (340, 55348), (404, 46580), (505, 37264), (548, 34340), (680, 27674), (685, 27472), (808, 23290), (1010, 18632), (1096, 17170), (1360, 13837), (1370, 13736), (1616, 11645), (1717, 10960), (2020, 9316), (2192, 8585), (2329, 8080), (2740, 6868), (3434, 5480), (4040, 4658)]