21405890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{11447}}^1$

素因数の和:11482

約数の個数: 32

約数和(自身を含む): 44509824

約数和(自身を除く): 23103934

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 110, 170, 187, 374, 935, 1870, 11447, 22894, 57235, 114470, 125917, 194599, 251834, 389198, 629585, 972995, 1259170, 1945990, 2140589, 4281178, 10702945, 21405890]

約数ペア:

[(1, 21405890), (2, 10702945), (5, 4281178), (10, 2140589), (11, 1945990), (17, 1259170), (22, 972995), (34, 629585), (55, 389198), (85, 251834), (110, 194599), (170, 125917), (187, 114470), (374, 57235), (935, 22894), (1870, 11447)]