631509140

素因数分解:

$2^2\times 5^1\times {\mathrm{1493}}^1\times {\mathrm{21149}}^1$

素因数の和:22651

約数の個数: 24

約数和(自身を含む): 1327120200

約数和(自身を除く): 695611060

約数列:

[1, 2, 4, 5, 10, 20, 1493, 2986, 5972, 7465, 14930, 21149, 29860, 42298, 84596, 105745, 211490, 422980, 31575457, 63150914, 126301828, 157877285, 315754570, 631509140]

約数ペア:

[(1, 631509140), (2, 315754570), (4, 157877285), (5, 126301828), (10, 63150914), (20, 31575457), (1493, 422980), (2986, 211490), (5972, 105745), (7465, 84596), (14930, 42298), (21149, 29860)]