28282137

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 42470400

約数和(自身を除く): 14188263

約数列:

[1, 3, 13, 31, 39, 93, 149, 157, 403, 447, 471, 1209, 1937, 2041, 4619, 4867, 5811, 6123, 13857, 14601, 23393, 60047, 63271, 70179, 180141, 189813, 304109, 725183, 912327, 2175549, 9427379, 28282137]

約数ペア:

[(1, 28282137), (3, 9427379), (13, 2175549), (31, 912327), (39, 725183), (93, 304109), (149, 189813), (157, 180141), (403, 70179), (447, 63271), (471, 60047), (1209, 23393), (1937, 14601), (2041, 13857), (4619, 6123), (4867, 5811)]