21112884

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{229}}^1$

素因数の和:449

約数の個数: 72

約数和(自身を含む): 58017960

約数和(自身を除く): 36905076

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 197, 229, 234, 394, 458, 468, 591, 687, 788, 916, 1182, 1374, 1773, 2061, 2364, 2561, 2748, 2977, 3546, 4122, 5122, 5954, 7092, 7683, 8244, 8931, 10244, 11908, 15366, 17862, 23049, 26793, 30732, 35724, 45113, 46098, 53586, 90226, 92196, 107172, 135339, 180452, 270678, 406017, 541356, 586469, 812034, 1172938, 1624068, 1759407, 2345876, 3518814, 5278221, 7037628, 10556442, 21112884]

約数ペア:

[(1, 21112884), (2, 10556442), (3, 7037628), (4, 5278221), (6, 3518814), (9, 2345876), (12, 1759407), (13, 1624068), (18, 1172938), (26, 812034), (36, 586469), (39, 541356), (52, 406017), (78, 270678), (117, 180452), (156, 135339), (197, 107172), (229, 92196), (234, 90226), (394, 53586), (458, 46098), (468, 45113), (591, 35724), (687, 30732), (788, 26793), (916, 23049), (1182, 17862), (1374, 15366), (1773, 11908), (2061, 10244), (2364, 8931), (2561, 8244), (2748, 7683), (2977, 7092), (3546, 5954), (4122, 5122)]