21879440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{47}}^1$

素因数の和:117

約数の個数: 120

約数和(自身を含む): 59246208

約数和(自身を除く): 37366768

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 40, 44, 46, 47, 55, 80, 88, 92, 94, 110, 115, 176, 184, 188, 220, 230, 235, 253, 368, 376, 440, 460, 470, 506, 517, 529, 752, 880, 920, 940, 1012, 1034, 1058, 1081, 1265, 1840, 1880, 2024, 2068, 2116, 2162, 2530, 2585, 2645, 3760, 4048, 4136, 4232, 4324, 5060, 5170, 5290, 5405, 5819, 8272, 8464, 8648, 10120, 10340, 10580, 10810, 11638, 11891, 17296, 20240, 20680, 21160, 21620, 23276, 23782, 24863, 29095, 41360, 42320, 43240, 46552, 47564, 49726, 58190, 59455, 86480, 93104, 95128, 99452, 116380, 118910, 124315, 190256, 198904, 232760, 237820, 248630, 273493, 397808, 465520, 475640, 497260, 546986, 951280, 994520, 1093972, 1367465, 1989040, 2187944, 2734930, 4375888, 5469860, 10939720, 21879440]

約数ペア:

[(1, 21879440), (2, 10939720), (4, 5469860), (5, 4375888), (8, 2734930), (10, 2187944), (11, 1989040), (16, 1367465), (20, 1093972), (22, 994520), (23, 951280), (40, 546986), (44, 497260), (46, 475640), (47, 465520), (55, 397808), (80, 273493), (88, 248630), (92, 237820), (94, 232760), (110, 198904), (115, 190256), (176, 124315), (184, 118910), (188, 116380), (220, 99452), (230, 95128), (235, 93104), (253, 86480), (368, 59455), (376, 58190), (440, 49726), (460, 47564), (470, 46552), (506, 43240), (517, 42320), (529, 41360), (752, 29095), (880, 24863), (920, 23782), (940, 23276), (1012, 21620), (1034, 21160), (1058, 20680), (1081, 20240), (1265, 17296), (1840, 11891), (1880, 11638), (2024, 10810), (2068, 10580), (2116, 10340), (2162, 10120), (2530, 8648), (2585, 8464), (2645, 8272), (3760, 5819), (4048, 5405), (4136, 5290), (4232, 5170), (4324, 5060)]