21695536

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{31}}^2\times {\mathrm{83}}^1$

素因数の和:170

約数の個数: 60

約数和(自身を含む): 46543896

約数和(自身を除く): 24848360

約数列:

[1, 2, 4, 8, 16, 17, 31, 34, 62, 68, 83, 124, 136, 166, 248, 272, 332, 496, 527, 664, 961, 1054, 1328, 1411, 1922, 2108, 2573, 2822, 3844, 4216, 5146, 5644, 7688, 8432, 10292, 11288, 15376, 16337, 20584, 22576, 32674, 41168, 43741, 65348, 79763, 87482, 130696, 159526, 174964, 261392, 319052, 349928, 638104, 699856, 1276208, 1355971, 2711942, 5423884, 10847768, 21695536]

約数ペア:

[(1, 21695536), (2, 10847768), (4, 5423884), (8, 2711942), (16, 1355971), (17, 1276208), (31, 699856), (34, 638104), (62, 349928), (68, 319052), (83, 261392), (124, 174964), (136, 159526), (166, 130696), (248, 87482), (272, 79763), (332, 65348), (496, 43741), (527, 41168), (664, 32674), (961, 22576), (1054, 20584), (1328, 16337), (1411, 15376), (1922, 11288), (2108, 10292), (2573, 8432), (2822, 7688), (3844, 5644), (4216, 5146)]