21109220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{419}}^1$

素因数の和:668

約数の個数: 48

約数和(自身を含む): 48686400

約数和(自身を除く): 27577180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 229, 419, 458, 838, 916, 1145, 1676, 2095, 2290, 2519, 4190, 4580, 4609, 5038, 8380, 9218, 10076, 12595, 18436, 23045, 25190, 46090, 50380, 92180, 95951, 191902, 383804, 479755, 959510, 1055461, 1919020, 2110922, 4221844, 5277305, 10554610, 21109220]

約数ペア:

[(1, 21109220), (2, 10554610), (4, 5277305), (5, 4221844), (10, 2110922), (11, 1919020), (20, 1055461), (22, 959510), (44, 479755), (55, 383804), (110, 191902), (220, 95951), (229, 92180), (419, 50380), (458, 46090), (838, 25190), (916, 23045), (1145, 18436), (1676, 12595), (2095, 10076), (2290, 9218), (2519, 8380), (4190, 5038), (4580, 4609)]