31756420

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 68544000

約数和(自身を除く): 36787580

約数列:

[1, 2, 4, 5, 10, 20, 79, 101, 158, 199, 202, 316, 395, 398, 404, 505, 790, 796, 995, 1010, 1580, 1990, 2020, 3980, 7979, 15721, 15958, 20099, 31442, 31916, 39895, 40198, 62884, 78605, 79790, 80396, 100495, 157210, 159580, 200990, 314420, 401980, 1587821, 3175642, 6351284, 7939105, 15878210, 31756420]

約数ペア:

[(1, 31756420), (2, 15878210), (4, 7939105), (5, 6351284), (10, 3175642), (20, 1587821), (79, 401980), (101, 314420), (158, 200990), (199, 159580), (202, 157210), (316, 100495), (395, 80396), (398, 79790), (404, 78605), (505, 62884), (790, 40198), (796, 39895), (995, 31916), (1010, 31442), (1580, 20099), (1990, 15958), (2020, 15721), (3980, 7979)]