19978644

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{5801}}^1$

素因数の和:5856

約数の個数: 48

約数和(自身を含む): 54585216

約数和(自身を除く): 34606572

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 41, 42, 82, 84, 123, 164, 246, 287, 492, 574, 861, 1148, 1722, 3444, 5801, 11602, 17403, 23204, 34806, 40607, 69612, 81214, 121821, 162428, 237841, 243642, 475682, 487284, 713523, 951364, 1427046, 1664887, 2854092, 3329774, 4994661, 6659548, 9989322, 19978644]

約数ペア:

[(1, 19978644), (2, 9989322), (3, 6659548), (4, 4994661), (6, 3329774), (7, 2854092), (12, 1664887), (14, 1427046), (21, 951364), (28, 713523), (41, 487284), (42, 475682), (82, 243642), (84, 237841), (123, 162428), (164, 121821), (246, 81214), (287, 69612), (492, 40607), (574, 34806), (861, 23204), (1148, 17403), (1722, 11602), (3444, 5801)]