20861115

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{239}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 38223360

約数和(自身を除く): 17362245

約数列:

[1, 3, 5, 11, 15, 23, 33, 55, 69, 115, 165, 239, 253, 345, 529, 717, 759, 1195, 1265, 1587, 2629, 2645, 3585, 3795, 5497, 5819, 7887, 7935, 13145, 16491, 17457, 27485, 29095, 39435, 60467, 82455, 87285, 126431, 181401, 302335, 379293, 632155, 907005, 1390741, 1896465, 4172223, 6953705, 20861115]

約数ペア:

[(1, 20861115), (3, 6953705), (5, 4172223), (11, 1896465), (15, 1390741), (23, 907005), (33, 632155), (55, 379293), (69, 302335), (115, 181401), (165, 126431), (239, 87285), (253, 82455), (345, 60467), (529, 39435), (717, 29095), (759, 27485), (1195, 17457), (1265, 16491), (1587, 13145), (2629, 7935), (2645, 7887), (3585, 5819), (3795, 5497)]