20159000

素因数分解:

$2^3\times 5^3\times {\mathrm{19}}^1\times {\mathrm{1061}}^1$

素因数の和:1101

約数の個数: 64

約数和(自身を含む): 49701600

約数和(自身を除く): 29542600

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, 1000, 1061, 1900, 2122, 2375, 3800, 4244, 4750, 5305, 8488, 9500, 10610, 19000, 20159, 21220, 26525, 40318, 42440, 53050, 80636, 100795, 106100, 132625, 161272, 201590, 212200, 265250, 403180, 503975, 530500, 806360, 1007950, 1061000, 2015900, 2519875, 4031800, 5039750, 10079500, 20159000]

約数ペア:

[(1, 20159000), (2, 10079500), (4, 5039750), (5, 4031800), (8, 2519875), (10, 2015900), (19, 1061000), (20, 1007950), (25, 806360), (38, 530500), (40, 503975), (50, 403180), (76, 265250), (95, 212200), (100, 201590), (125, 161272), (152, 132625), (190, 106100), (200, 100795), (250, 80636), (380, 53050), (475, 42440), (500, 40318), (760, 26525), (950, 21220), (1000, 20159), (1061, 19000), (1900, 10610), (2122, 9500), (2375, 8488), (3800, 5305), (4244, 4750)]