18320788

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{223}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 36126720

約数和(自身を除く): 17805932

約数列:

[1, 2, 4, 19, 23, 38, 46, 47, 76, 92, 94, 188, 223, 437, 446, 874, 892, 893, 1081, 1748, 1786, 2162, 3572, 4237, 4324, 5129, 8474, 10258, 10481, 16948, 20516, 20539, 20962, 41078, 41924, 82156, 97451, 194902, 199139, 241063, 389804, 398278, 482126, 796556, 964252, 4580197, 9160394, 18320788]

約数ペア:

[(1, 18320788), (2, 9160394), (4, 4580197), (19, 964252), (23, 796556), (38, 482126), (46, 398278), (47, 389804), (76, 241063), (92, 199139), (94, 194902), (188, 97451), (223, 82156), (437, 41924), (446, 41078), (874, 20962), (892, 20539), (893, 20516), (1081, 16948), (1748, 10481), (1786, 10258), (2162, 8474), (3572, 5129), (4237, 4324)]