21380904

素因数分解:

$2^3\times 3^2\times {\mathrm{149}}^1\times {\mathrm{1993}}^1$

素因数の和:2154

約数の個数: 48

約数和(自身を含む): 58324500

約数和(自身を除く): 36943596

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 149, 298, 447, 596, 894, 1192, 1341, 1788, 1993, 2682, 3576, 3986, 5364, 5979, 7972, 10728, 11958, 15944, 17937, 23916, 35874, 47832, 71748, 143496, 296957, 593914, 890871, 1187828, 1781742, 2375656, 2672613, 3563484, 5345226, 7126968, 10690452, 21380904]

約数ペア:

[(1, 21380904), (2, 10690452), (3, 7126968), (4, 5345226), (6, 3563484), (8, 2672613), (9, 2375656), (12, 1781742), (18, 1187828), (24, 890871), (36, 593914), (72, 296957), (149, 143496), (298, 71748), (447, 47832), (596, 35874), (894, 23916), (1192, 17937), (1341, 15944), (1788, 11958), (1993, 10728), (2682, 7972), (3576, 5979), (3986, 5364)]