18815000

素因数分解:

$2^3\times 5^4\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:150

約数の個数: 80

約数和(自身を含む): 45547920

約数和(自身を除く): 26732920

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 53, 71, 100, 106, 125, 142, 200, 212, 250, 265, 284, 355, 424, 500, 530, 568, 625, 710, 1000, 1060, 1250, 1325, 1420, 1775, 2120, 2500, 2650, 2840, 3550, 3763, 5000, 5300, 6625, 7100, 7526, 8875, 10600, 13250, 14200, 15052, 17750, 18815, 26500, 30104, 33125, 35500, 37630, 44375, 53000, 66250, 71000, 75260, 88750, 94075, 132500, 150520, 177500, 188150, 265000, 355000, 376300, 470375, 752600, 940750, 1881500, 2351875, 3763000, 4703750, 9407500, 18815000]

約数ペア:

[(1, 18815000), (2, 9407500), (4, 4703750), (5, 3763000), (8, 2351875), (10, 1881500), (20, 940750), (25, 752600), (40, 470375), (50, 376300), (53, 355000), (71, 265000), (100, 188150), (106, 177500), (125, 150520), (142, 132500), (200, 94075), (212, 88750), (250, 75260), (265, 71000), (284, 66250), (355, 53000), (424, 44375), (500, 37630), (530, 35500), (568, 33125), (625, 30104), (710, 26500), (1000, 18815), (1060, 17750), (1250, 15052), (1325, 14200), (1420, 13250), (1775, 10600), (2120, 8875), (2500, 7526), (2650, 7100), (2840, 6625), (3550, 5300), (3763, 5000)]