21451750

素因数分解:

$2^1\times 5^3\times {\mathrm{53}}^1\times {\mathrm{1619}}^1$

素因数の和:1689

約数の個数: 32

約数和(自身を含む): 40940640

約数和(自身を除く): 19488890

約数列:

[1, 2, 5, 10, 25, 50, 53, 106, 125, 250, 265, 530, 1325, 1619, 2650, 3238, 6625, 8095, 13250, 16190, 40475, 80950, 85807, 171614, 202375, 404750, 429035, 858070, 2145175, 4290350, 10725875, 21451750]

約数ペア:

[(1, 21451750), (2, 10725875), (5, 4290350), (10, 2145175), (25, 858070), (50, 429035), (53, 404750), (106, 202375), (125, 171614), (250, 85807), (265, 80950), (530, 40475), (1325, 16190), (1619, 13250), (2650, 8095), (3238, 6625)]