17981920

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{601}}^1$

素因数の和:644

約数の個数: 96

約数和(自身を含む): 49152096

約数和(自身を除く): 31170176

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 32, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 160, 170, 176, 187, 220, 272, 340, 352, 374, 440, 544, 601, 680, 748, 880, 935, 1202, 1360, 1496, 1760, 1870, 2404, 2720, 2992, 3005, 3740, 4808, 5984, 6010, 6611, 7480, 9616, 10217, 12020, 13222, 14960, 19232, 20434, 24040, 26444, 29920, 33055, 40868, 48080, 51085, 52888, 66110, 81736, 96160, 102170, 105776, 112387, 132220, 163472, 204340, 211552, 224774, 264440, 326944, 408680, 449548, 528880, 561935, 817360, 899096, 1057760, 1123870, 1634720, 1798192, 2247740, 3596384, 4495480, 8990960, 17981920]

約数ペア:

[(1, 17981920), (2, 8990960), (4, 4495480), (5, 3596384), (8, 2247740), (10, 1798192), (11, 1634720), (16, 1123870), (17, 1057760), (20, 899096), (22, 817360), (32, 561935), (34, 528880), (40, 449548), (44, 408680), (55, 326944), (68, 264440), (80, 224774), (85, 211552), (88, 204340), (110, 163472), (136, 132220), (160, 112387), (170, 105776), (176, 102170), (187, 96160), (220, 81736), (272, 66110), (340, 52888), (352, 51085), (374, 48080), (440, 40868), (544, 33055), (601, 29920), (680, 26444), (748, 24040), (880, 20434), (935, 19232), (1202, 14960), (1360, 13222), (1496, 12020), (1760, 10217), (1870, 9616), (2404, 7480), (2720, 6611), (2992, 6010), (3005, 5984), (3740, 4808)]