19895800

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{3209}}^1$

素因数の和:3256

約数の個数: 48

約数和(自身を含む): 47764800

約数和(自身を除く): 27869000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 200, 248, 310, 620, 775, 1240, 1550, 3100, 3209, 6200, 6418, 12836, 16045, 25672, 32090, 64180, 80225, 99479, 128360, 160450, 198958, 320900, 397916, 497395, 641800, 795832, 994790, 1989580, 2486975, 3979160, 4973950, 9947900, 19895800]

約数ペア:

[(1, 19895800), (2, 9947900), (4, 4973950), (5, 3979160), (8, 2486975), (10, 1989580), (20, 994790), (25, 795832), (31, 641800), (40, 497395), (50, 397916), (62, 320900), (100, 198958), (124, 160450), (155, 128360), (200, 99479), (248, 80225), (310, 64180), (620, 32090), (775, 25672), (1240, 16045), (1550, 12836), (3100, 6418), (3209, 6200)]