20928160

素因数分解:

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

素因数の和:107

約数の個数: 144

約数和(自身を含む): 57915648

約数和(自身を除く): 36987488

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 32, 40, 44, 46, 47, 55, 80, 88, 92, 94, 110, 115, 121, 160, 176, 184, 188, 220, 230, 235, 242, 253, 352, 368, 376, 440, 460, 470, 484, 506, 517, 605, 736, 752, 880, 920, 940, 968, 1012, 1034, 1081, 1210, 1265, 1504, 1760, 1840, 1880, 1936, 2024, 2068, 2162, 2420, 2530, 2585, 2783, 3680, 3760, 3872, 4048, 4136, 4324, 4840, 5060, 5170, 5405, 5566, 5687, 7520, 8096, 8272, 8648, 9680, 10120, 10340, 10810, 11132, 11374, 11891, 13915, 16544, 17296, 19360, 20240, 20680, 21620, 22264, 22748, 23782, 27830, 28435, 34592, 40480, 41360, 43240, 44528, 45496, 47564, 55660, 56870, 59455, 82720, 86480, 89056, 90992, 95128, 111320, 113740, 118910, 130801, 172960, 181984, 190256, 222640, 227480, 237820, 261602, 380512, 445280, 454960, 475640, 523204, 654005, 909920, 951280, 1046408, 1308010, 1902560, 2092816, 2616020, 4185632, 5232040, 10464080, 20928160]

約数ペア:

[(1, 20928160), (2, 10464080), (4, 5232040), (5, 4185632), (8, 2616020), (10, 2092816), (11, 1902560), (16, 1308010), (20, 1046408), (22, 951280), (23, 909920), (32, 654005), (40, 523204), (44, 475640), (46, 454960), (47, 445280), (55, 380512), (80, 261602), (88, 237820), (92, 227480), (94, 222640), (110, 190256), (115, 181984), (121, 172960), (160, 130801), (176, 118910), (184, 113740), (188, 111320), (220, 95128), (230, 90992), (235, 89056), (242, 86480), (253, 82720), (352, 59455), (368, 56870), (376, 55660), (440, 47564), (460, 45496), (470, 44528), (484, 43240), (506, 41360), (517, 40480), (605, 34592), (736, 28435), (752, 27830), (880, 23782), (920, 22748), (940, 22264), (968, 21620), (1012, 20680), (1034, 20240), (1081, 19360), (1210, 17296), (1265, 16544), (1504, 13915), (1760, 11891), (1840, 11374), (1880, 11132), (1936, 10810), (2024, 10340), (2068, 10120), (2162, 9680), (2420, 8648), (2530, 8272), (2585, 8096), (2783, 7520), (3680, 5687), (3760, 5566), (3872, 5405), (4048, 5170), (4136, 5060), (4324, 4840)]