39660160

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2049

約数の個数: 64

約数和(自身を含む): 97920000

約数和(自身を除く): 58259840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 1999, 2480, 3968, 3998, 4960, 7996, 9920, 9995, 15992, 19840, 19990, 31984, 39980, 61969, 63968, 79960, 123938, 127936, 159920, 247876, 255872, 309845, 319840, 495752, 619690, 639680, 991504, 1239380, 1279360, 1983008, 2478760, 3966016, 4957520, 7932032, 9915040, 19830080, 39660160]

約数ペア:

[(1, 39660160), (2, 19830080), (4, 9915040), (5, 7932032), (8, 4957520), (10, 3966016), (16, 2478760), (20, 1983008), (31, 1279360), (32, 1239380), (40, 991504), (62, 639680), (64, 619690), (80, 495752), (124, 319840), (128, 309845), (155, 255872), (160, 247876), (248, 159920), (310, 127936), (320, 123938), (496, 79960), (620, 63968), (640, 61969), (992, 39980), (1240, 31984), (1984, 19990), (1999, 19840), (2480, 15992), (3968, 9995), (3998, 9920), (4960, 7996)]