21105612

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{239}}^1$

素因数の和:483

約数の個数: 72

約数和(自身を含む): 58705920

約数和(自身を除く): 37600308

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 198, 223, 239, 396, 446, 478, 669, 717, 892, 956, 1338, 1434, 2007, 2151, 2453, 2629, 2676, 2868, 4014, 4302, 4906, 5258, 7359, 7887, 8028, 8604, 9812, 10516, 14718, 15774, 22077, 23661, 29436, 31548, 44154, 47322, 53297, 88308, 94644, 106594, 159891, 213188, 319782, 479673, 586267, 639564, 959346, 1172534, 1758801, 1918692, 2345068, 3517602, 5276403, 7035204, 10552806, 21105612]

約数ペア:

[(1, 21105612), (2, 10552806), (3, 7035204), (4, 5276403), (6, 3517602), (9, 2345068), (11, 1918692), (12, 1758801), (18, 1172534), (22, 959346), (33, 639564), (36, 586267), (44, 479673), (66, 319782), (99, 213188), (132, 159891), (198, 106594), (223, 94644), (239, 88308), (396, 53297), (446, 47322), (478, 44154), (669, 31548), (717, 29436), (892, 23661), (956, 22077), (1338, 15774), (1434, 14718), (2007, 10516), (2151, 9812), (2453, 8604), (2629, 8028), (2676, 7887), (2868, 7359), (4014, 5258), (4302, 4906)]