20586830

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:245

約数の個数: 64

約数和(自身を含む): 43623360

約数和(自身を除く): 23036530

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 101, 109, 110, 170, 187, 202, 218, 374, 505, 545, 935, 1010, 1090, 1111, 1199, 1717, 1853, 1870, 2222, 2398, 3434, 3706, 5555, 5995, 8585, 9265, 11009, 11110, 11990, 17170, 18530, 18887, 20383, 22018, 37774, 40766, 55045, 94435, 101915, 110090, 121099, 187153, 188870, 203830, 242198, 374306, 605495, 935765, 1210990, 1871530, 2058683, 4117366, 10293415, 20586830]

約数ペア:

[(1, 20586830), (2, 10293415), (5, 4117366), (10, 2058683), (11, 1871530), (17, 1210990), (22, 935765), (34, 605495), (55, 374306), (85, 242198), (101, 203830), (109, 188870), (110, 187153), (170, 121099), (187, 110090), (202, 101915), (218, 94435), (374, 55045), (505, 40766), (545, 37774), (935, 22018), (1010, 20383), (1090, 18887), (1111, 18530), (1199, 17170), (1717, 11990), (1853, 11110), (1870, 11009), (2222, 9265), (2398, 8585), (3434, 5995), (3706, 5555)]