19805408

素因数分解:

$2^5\times 7^2\times {\mathrm{17}}^1\times {\mathrm{743}}^1$

素因数の和:784

約数の個数: 72

約数和(自身を含む): 48090672

約数和(自身を除く): 28285264

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 49, 56, 68, 98, 112, 119, 136, 196, 224, 238, 272, 392, 476, 544, 743, 784, 833, 952, 1486, 1568, 1666, 1904, 2972, 3332, 3808, 5201, 5944, 6664, 10402, 11888, 12631, 13328, 20804, 23776, 25262, 26656, 36407, 41608, 50524, 72814, 83216, 88417, 101048, 145628, 166432, 176834, 202096, 291256, 353668, 404192, 582512, 618919, 707336, 1165024, 1237838, 1414672, 2475676, 2829344, 4951352, 9902704, 19805408]

約数ペア:

[(1, 19805408), (2, 9902704), (4, 4951352), (7, 2829344), (8, 2475676), (14, 1414672), (16, 1237838), (17, 1165024), (28, 707336), (32, 618919), (34, 582512), (49, 404192), (56, 353668), (68, 291256), (98, 202096), (112, 176834), (119, 166432), (136, 145628), (196, 101048), (224, 88417), (238, 83216), (272, 72814), (392, 50524), (476, 41608), (544, 36407), (743, 26656), (784, 25262), (833, 23776), (952, 20804), (1486, 13328), (1568, 12631), (1666, 11888), (1904, 10402), (2972, 6664), (3332, 5944), (3808, 5201)]