21129680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1847}}^1$

素因数の和:1884

約数の個数: 80

約数和(自身を含む): 57746304

約数和(自身を除く): 36616624

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 176, 208, 220, 260, 286, 440, 520, 572, 715, 880, 1040, 1144, 1430, 1847, 2288, 2860, 3694, 5720, 7388, 9235, 11440, 14776, 18470, 20317, 24011, 29552, 36940, 40634, 48022, 73880, 81268, 96044, 101585, 120055, 147760, 162536, 192088, 203170, 240110, 264121, 325072, 384176, 406340, 480220, 528242, 812680, 960440, 1056484, 1320605, 1625360, 1920880, 2112968, 2641210, 4225936, 5282420, 10564840, 21129680]

約数ペア:

[(1, 21129680), (2, 10564840), (4, 5282420), (5, 4225936), (8, 2641210), (10, 2112968), (11, 1920880), (13, 1625360), (16, 1320605), (20, 1056484), (22, 960440), (26, 812680), (40, 528242), (44, 480220), (52, 406340), (55, 384176), (65, 325072), (80, 264121), (88, 240110), (104, 203170), (110, 192088), (130, 162536), (143, 147760), (176, 120055), (208, 101585), (220, 96044), (260, 81268), (286, 73880), (440, 48022), (520, 40634), (572, 36940), (715, 29552), (880, 24011), (1040, 20317), (1144, 18470), (1430, 14776), (1847, 11440), (2288, 9235), (2860, 7388), (3694, 5720)]