30721480

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{40423}}^1$

素因数の和:40453

約数の個数: 32

約数和(自身を含む): 72763200

約数和(自身を除く): 42041720

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 40423, 80846, 161692, 202115, 323384, 404230, 768037, 808460, 1536074, 1616920, 3072148, 3840185, 6144296, 7680370, 15360740, 30721480]

約数ペア:

[(1, 30721480), (2, 15360740), (4, 7680370), (5, 6144296), (8, 3840185), (10, 3072148), (19, 1616920), (20, 1536074), (38, 808460), (40, 768037), (76, 404230), (95, 323384), (152, 202115), (190, 161692), (380, 80846), (760, 40423)]