9915040

素因数分解:

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

素因数の和:2045

約数の個数: 48

約数和(自身を含む): 24192000

約数和(自身を除く): 14276960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 1999, 2480, 3998, 4960, 7996, 9995, 15992, 19990, 31984, 39980, 61969, 63968, 79960, 123938, 159920, 247876, 309845, 319840, 495752, 619690, 991504, 1239380, 1983008, 2478760, 4957520, 9915040]

約数ペア:

[(1, 9915040), (2, 4957520), (4, 2478760), (5, 1983008), (8, 1239380), (10, 991504), (16, 619690), (20, 495752), (31, 319840), (32, 309845), (40, 247876), (62, 159920), (80, 123938), (124, 79960), (155, 63968), (160, 61969), (248, 39980), (310, 31984), (496, 19990), (620, 15992), (992, 9995), (1240, 7996), (1999, 4960), (2480, 3998)]