665549540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{719}}^1\times {\mathrm{1493}}^1$

素因数の和:2252

約数の個数: 48

約数和(自身を含む): 1445713920

約数和(自身を除く): 780164380

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 719, 1438, 1493, 2876, 2986, 3595, 5972, 7190, 7465, 14380, 14930, 22289, 29860, 44578, 46283, 89156, 92566, 111445, 185132, 222890, 231415, 445780, 462830, 925660, 1073467, 2146934, 4293868, 5367335, 10734670, 21469340, 33277477, 66554954, 133109908, 166387385, 332774770, 665549540]

約数ペア:

[(1, 665549540), (2, 332774770), (4, 166387385), (5, 133109908), (10, 66554954), (20, 33277477), (31, 21469340), (62, 10734670), (124, 5367335), (155, 4293868), (310, 2146934), (620, 1073467), (719, 925660), (1438, 462830), (1493, 445780), (2876, 231415), (2986, 222890), (3595, 185132), (5972, 111445), (7190, 92566), (7465, 89156), (14380, 46283), (14930, 44578), (22289, 29860)]