77990000

素因数分解:

$2^4\times 5^4\times {\mathrm{11}}^1\times {\mathrm{709}}^1$

素因数の和:748

約数の個数: 100

約数和(自身を含む): 206277720

約数和(自身を除く): 128287720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 125, 176, 200, 220, 250, 275, 400, 440, 500, 550, 625, 709, 880, 1000, 1100, 1250, 1375, 1418, 2000, 2200, 2500, 2750, 2836, 3545, 4400, 5000, 5500, 5672, 6875, 7090, 7799, 10000, 11000, 11344, 13750, 14180, 15598, 17725, 22000, 27500, 28360, 31196, 35450, 38995, 55000, 56720, 62392, 70900, 77990, 88625, 110000, 124784, 141800, 155980, 177250, 194975, 283600, 311960, 354500, 389950, 443125, 623920, 709000, 779900, 886250, 974875, 1418000, 1559800, 1772500, 1949750, 3119600, 3545000, 3899500, 4874375, 7090000, 7799000, 9748750, 15598000, 19497500, 38995000, 77990000]

約数ペア:

[(1, 77990000), (2, 38995000), (4, 19497500), (5, 15598000), (8, 9748750), (10, 7799000), (11, 7090000), (16, 4874375), (20, 3899500), (22, 3545000), (25, 3119600), (40, 1949750), (44, 1772500), (50, 1559800), (55, 1418000), (80, 974875), (88, 886250), (100, 779900), (110, 709000), (125, 623920), (176, 443125), (200, 389950), (220, 354500), (250, 311960), (275, 283600), (400, 194975), (440, 177250), (500, 155980), (550, 141800), (625, 124784), (709, 110000), (880, 88625), (1000, 77990), (1100, 70900), (1250, 62392), (1375, 56720), (1418, 55000), (2000, 38995), (2200, 35450), (2500, 31196), (2750, 28360), (2836, 27500), (3545, 22000), (4400, 17725), (5000, 15598), (5500, 14180), (5672, 13750), (6875, 11344), (7090, 11000), (7799, 10000)]