21375376

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:272

約数の個数: 60

約数和(自身を含む): 46523932

約数和(自身を除く): 25148556

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 61, 88, 121, 122, 176, 181, 242, 244, 362, 484, 488, 671, 724, 968, 976, 1342, 1448, 1936, 1991, 2684, 2896, 3982, 5368, 7381, 7964, 10736, 11041, 14762, 15928, 21901, 22082, 29524, 31856, 43802, 44164, 59048, 87604, 88328, 118096, 121451, 175208, 176656, 242902, 350416, 485804, 971608, 1335961, 1943216, 2671922, 5343844, 10687688, 21375376]

約数ペア:

[(1, 21375376), (2, 10687688), (4, 5343844), (8, 2671922), (11, 1943216), (16, 1335961), (22, 971608), (44, 485804), (61, 350416), (88, 242902), (121, 176656), (122, 175208), (176, 121451), (181, 118096), (242, 88328), (244, 87604), (362, 59048), (484, 44164), (488, 43802), (671, 31856), (724, 29524), (968, 22082), (976, 21901), (1342, 15928), (1448, 14762), (1936, 11041), (1991, 10736), (2684, 7964), (2896, 7381), (3982, 5368)]