16689220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1187}}^1$

素因数の和:1252

約数の個数: 48

約数和(自身を含む): 37920960

約数和(自身を除く): 21231740

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 74, 76, 95, 148, 185, 190, 370, 380, 703, 740, 1187, 1406, 2374, 2812, 3515, 4748, 5935, 7030, 11870, 14060, 22553, 23740, 43919, 45106, 87838, 90212, 112765, 175676, 219595, 225530, 439190, 451060, 834461, 878380, 1668922, 3337844, 4172305, 8344610, 16689220]

約数ペア:

[(1, 16689220), (2, 8344610), (4, 4172305), (5, 3337844), (10, 1668922), (19, 878380), (20, 834461), (37, 451060), (38, 439190), (74, 225530), (76, 219595), (95, 175676), (148, 112765), (185, 90212), (190, 87838), (370, 45106), (380, 43919), (703, 23740), (740, 22553), (1187, 14060), (1406, 11870), (2374, 7030), (2812, 5935), (3515, 4748)]