20557854

素因数分解:

$2^1\times 3^3\times {\mathrm{61}}^1\times {\mathrm{79}}^2$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 47028240

約数和(自身を除く): 26470386

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 61, 79, 122, 158, 183, 237, 366, 474, 549, 711, 1098, 1422, 1647, 2133, 3294, 4266, 4819, 6241, 9638, 12482, 14457, 18723, 28914, 37446, 43371, 56169, 86742, 112338, 130113, 168507, 260226, 337014, 380701, 761402, 1142103, 2284206, 3426309, 6852618, 10278927, 20557854]

約数ペア:

[(1, 20557854), (2, 10278927), (3, 6852618), (6, 3426309), (9, 2284206), (18, 1142103), (27, 761402), (54, 380701), (61, 337014), (79, 260226), (122, 168507), (158, 130113), (183, 112338), (237, 86742), (366, 56169), (474, 43371), (549, 37446), (711, 28914), (1098, 18723), (1422, 14457), (1647, 12482), (2133, 9638), (3294, 6241), (4266, 4819)]