19905138

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{439}}^1$

素因数の和:687

約数の個数: 48

約数和(自身を含む): 47361600

約数和(自身を除く): 27456462

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198, 229, 439, 458, 687, 878, 1317, 1374, 2061, 2519, 2634, 3951, 4122, 4829, 5038, 7557, 7902, 9658, 14487, 15114, 22671, 28974, 43461, 45342, 86922, 100531, 201062, 301593, 603186, 904779, 1105841, 1809558, 2211682, 3317523, 6635046, 9952569, 19905138]

約数ペア:

[(1, 19905138), (2, 9952569), (3, 6635046), (6, 3317523), (9, 2211682), (11, 1809558), (18, 1105841), (22, 904779), (33, 603186), (66, 301593), (99, 201062), (198, 100531), (229, 86922), (439, 45342), (458, 43461), (687, 28974), (878, 22671), (1317, 15114), (1374, 14487), (2061, 9658), (2519, 7902), (2634, 7557), (3951, 5038), (4122, 4829)]