30984500

素因数分解:

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

素因数の和:2049

約数の個数: 48

約数和(自身を含む): 69888000

約数和(自身を除く): 38903500

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 125, 155, 250, 310, 500, 620, 775, 1550, 1999, 3100, 3875, 3998, 7750, 7996, 9995, 15500, 19990, 39980, 49975, 61969, 99950, 123938, 199900, 247876, 249875, 309845, 499750, 619690, 999500, 1239380, 1549225, 3098450, 6196900, 7746125, 15492250, 30984500]

約数ペア:

[(1, 30984500), (2, 15492250), (4, 7746125), (5, 6196900), (10, 3098450), (20, 1549225), (25, 1239380), (31, 999500), (50, 619690), (62, 499750), (100, 309845), (124, 249875), (125, 247876), (155, 199900), (250, 123938), (310, 99950), (500, 61969), (620, 49975), (775, 39980), (1550, 19990), (1999, 15500), (3100, 9995), (3875, 7996), (3998, 7750)]