21872816

素因数分解:

$2^4\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1213}}^1$

素因数の和:1258

約数の個数: 60

約数和(自身を含む): 51483312

約数和(自身を除く): 29610496

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 46, 49, 56, 92, 98, 112, 161, 184, 196, 322, 368, 392, 644, 784, 1127, 1213, 1288, 2254, 2426, 2576, 4508, 4852, 8491, 9016, 9704, 16982, 18032, 19408, 27899, 33964, 55798, 59437, 67928, 111596, 118874, 135856, 195293, 223192, 237748, 390586, 446384, 475496, 781172, 950992, 1367051, 1562344, 2734102, 3124688, 5468204, 10936408, 21872816]

約数ペア:

[(1, 21872816), (2, 10936408), (4, 5468204), (7, 3124688), (8, 2734102), (14, 1562344), (16, 1367051), (23, 950992), (28, 781172), (46, 475496), (49, 446384), (56, 390586), (92, 237748), (98, 223192), (112, 195293), (161, 135856), (184, 118874), (196, 111596), (322, 67928), (368, 59437), (392, 55798), (644, 33964), (784, 27899), (1127, 19408), (1213, 18032), (1288, 16982), (2254, 9704), (2426, 9016), (2576, 8491), (4508, 4852)]