18981440

素因数分解:

$2^6\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2579}}^1$

素因数の和:2619

約数の個数: 56

約数和(自身を含む): 47183040

約数和(自身を除く): 28201600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 160, 184, 230, 320, 368, 460, 736, 920, 1472, 1840, 2579, 3680, 5158, 7360, 10316, 12895, 20632, 25790, 41264, 51580, 59317, 82528, 103160, 118634, 165056, 206320, 237268, 296585, 412640, 474536, 593170, 825280, 949072, 1186340, 1898144, 2372680, 3796288, 4745360, 9490720, 18981440]

約数ペア:

[(1, 18981440), (2, 9490720), (4, 4745360), (5, 3796288), (8, 2372680), (10, 1898144), (16, 1186340), (20, 949072), (23, 825280), (32, 593170), (40, 474536), (46, 412640), (64, 296585), (80, 237268), (92, 206320), (115, 165056), (160, 118634), (184, 103160), (230, 82528), (320, 59317), (368, 51580), (460, 41264), (736, 25790), (920, 20632), (1472, 12895), (1840, 10316), (2579, 7360), (3680, 5158)]