15931985

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:209

約数の個数: 32

約数和(自身を含む): 21288960

約数和(自身を除く): 5356975

約数列:

[1, 5, 23, 31, 41, 109, 115, 155, 205, 545, 713, 943, 1271, 2507, 3379, 3565, 4469, 4715, 6355, 12535, 16895, 22345, 29233, 77717, 102787, 138539, 146165, 388585, 513935, 692695, 3186397, 15931985]

約数ペア:

[(1, 15931985), (5, 3186397), (23, 692695), (31, 513935), (41, 388585), (109, 146165), (115, 138539), (155, 102787), (205, 77717), (545, 29233), (713, 22345), (943, 16895), (1271, 12535), (2507, 6355), (3379, 4715), (3565, 4469)]