16111940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2052

約数の個数: 48

約数和(自身を含む): 37632000

約数和(自身を除く): 21520060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 1999, 2015, 3998, 4030, 7996, 8060, 9995, 19990, 25987, 39980, 51974, 61969, 103948, 123938, 129935, 247876, 259870, 309845, 519740, 619690, 805597, 1239380, 1611194, 3222388, 4027985, 8055970, 16111940]

約数ペア:

[(1, 16111940), (2, 8055970), (4, 4027985), (5, 3222388), (10, 1611194), (13, 1239380), (20, 805597), (26, 619690), (31, 519740), (52, 309845), (62, 259870), (65, 247876), (124, 129935), (130, 123938), (155, 103948), (260, 61969), (310, 51974), (403, 39980), (620, 25987), (806, 19990), (1612, 9995), (1999, 8060), (2015, 7996), (3998, 4030)]