123938000

素因数分解:

$2^4\times 5^3\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2053

約数の個数: 80

約数和(自身を含む): 309504000

約数和(自身を除く): 185566000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 125, 155, 200, 248, 250, 310, 400, 496, 500, 620, 775, 1000, 1240, 1550, 1999, 2000, 2480, 3100, 3875, 3998, 6200, 7750, 7996, 9995, 12400, 15500, 15992, 19990, 31000, 31984, 39980, 49975, 61969, 62000, 79960, 99950, 123938, 159920, 199900, 247876, 249875, 309845, 399800, 495752, 499750, 619690, 799600, 991504, 999500, 1239380, 1549225, 1999000, 2478760, 3098450, 3998000, 4957520, 6196900, 7746125, 12393800, 15492250, 24787600, 30984500, 61969000, 123938000]

約数ペア:

[(1, 123938000), (2, 61969000), (4, 30984500), (5, 24787600), (8, 15492250), (10, 12393800), (16, 7746125), (20, 6196900), (25, 4957520), (31, 3998000), (40, 3098450), (50, 2478760), (62, 1999000), (80, 1549225), (100, 1239380), (124, 999500), (125, 991504), (155, 799600), (200, 619690), (248, 499750), (250, 495752), (310, 399800), (400, 309845), (496, 249875), (500, 247876), (620, 199900), (775, 159920), (1000, 123938), (1240, 99950), (1550, 79960), (1999, 62000), (2000, 61969), (2480, 49975), (3100, 39980), (3875, 31984), (3998, 31000), (6200, 19990), (7750, 15992), (7996, 15500), (9995, 12400)]