31170640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20507}}^1$

素因数の和:20539

約数の個数: 40

約数和(自身を含む): 76289760

約数和(自身を除く): 45119120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 20507, 41014, 82028, 102535, 164056, 205070, 328112, 389633, 410140, 779266, 820280, 1558532, 1640560, 1948165, 3117064, 3896330, 6234128, 7792660, 15585320, 31170640]

約数ペア:

[(1, 31170640), (2, 15585320), (4, 7792660), (5, 6234128), (8, 3896330), (10, 3117064), (16, 1948165), (19, 1640560), (20, 1558532), (38, 820280), (40, 779266), (76, 410140), (80, 389633), (95, 328112), (152, 205070), (190, 164056), (304, 102535), (380, 82028), (760, 41014), (1520, 20507)]