18943000

素因数分解:

$2^3\times 5^3\times {\mathrm{19}}^1\times {\mathrm{997}}^1$

素因数の和:1037

約数の個数: 64

約数和(自身を含む): 46706400

約数和(自身を除く): 27763400

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 125, 152, 190, 200, 250, 380, 475, 500, 760, 950, 997, 1000, 1900, 1994, 2375, 3800, 3988, 4750, 4985, 7976, 9500, 9970, 18943, 19000, 19940, 24925, 37886, 39880, 49850, 75772, 94715, 99700, 124625, 151544, 189430, 199400, 249250, 378860, 473575, 498500, 757720, 947150, 997000, 1894300, 2367875, 3788600, 4735750, 9471500, 18943000]

約数ペア:

[(1, 18943000), (2, 9471500), (4, 4735750), (5, 3788600), (8, 2367875), (10, 1894300), (19, 997000), (20, 947150), (25, 757720), (38, 498500), (40, 473575), (50, 378860), (76, 249250), (95, 199400), (100, 189430), (125, 151544), (152, 124625), (190, 99700), (200, 94715), (250, 75772), (380, 49850), (475, 39880), (500, 37886), (760, 24925), (950, 19940), (997, 19000), (1000, 18943), (1900, 9970), (1994, 9500), (2375, 7976), (3800, 4985), (3988, 4750)]