19824980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:321

約数の個数: 96

約数和(自身を含む): 52012800

約数和(自身を除く): 32187820

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 29, 35, 38, 58, 70, 76, 95, 116, 133, 140, 145, 190, 203, 257, 266, 290, 380, 406, 514, 532, 551, 580, 665, 812, 1015, 1028, 1102, 1285, 1330, 1799, 2030, 2204, 2570, 2660, 2755, 3598, 3857, 4060, 4883, 5140, 5510, 7196, 7453, 7714, 8995, 9766, 11020, 14906, 15428, 17990, 19285, 19532, 24415, 29812, 34181, 35980, 37265, 38570, 48830, 52171, 68362, 74530, 77140, 97660, 104342, 136724, 141607, 149060, 170905, 208684, 260855, 283214, 341810, 521710, 566428, 683620, 708035, 991249, 1043420, 1416070, 1982498, 2832140, 3964996, 4956245, 9912490, 19824980]

約数ペア:

[(1, 19824980), (2, 9912490), (4, 4956245), (5, 3964996), (7, 2832140), (10, 1982498), (14, 1416070), (19, 1043420), (20, 991249), (28, 708035), (29, 683620), (35, 566428), (38, 521710), (58, 341810), (70, 283214), (76, 260855), (95, 208684), (116, 170905), (133, 149060), (140, 141607), (145, 136724), (190, 104342), (203, 97660), (257, 77140), (266, 74530), (290, 68362), (380, 52171), (406, 48830), (514, 38570), (532, 37265), (551, 35980), (580, 34181), (665, 29812), (812, 24415), (1015, 19532), (1028, 19285), (1102, 17990), (1285, 15428), (1330, 14906), (1799, 11020), (2030, 9766), (2204, 8995), (2570, 7714), (2660, 7453), (2755, 7196), (3598, 5510), (3857, 5140), (4060, 4883)]