19958000

素因数分解:

$2^4\times 5^3\times {\mathrm{17}}^1\times {\mathrm{587}}^1$

素因数の和:627

約数の個数: 80

約数和(自身を含む): 51184224

約数和(自身を除く): 31226224

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 125, 136, 170, 200, 250, 272, 340, 400, 425, 500, 587, 680, 850, 1000, 1174, 1360, 1700, 2000, 2125, 2348, 2935, 3400, 4250, 4696, 5870, 6800, 8500, 9392, 9979, 11740, 14675, 17000, 19958, 23480, 29350, 34000, 39916, 46960, 49895, 58700, 73375, 79832, 99790, 117400, 146750, 159664, 199580, 234800, 249475, 293500, 399160, 498950, 587000, 798320, 997900, 1174000, 1247375, 1995800, 2494750, 3991600, 4989500, 9979000, 19958000]

約数ペア:

[(1, 19958000), (2, 9979000), (4, 4989500), (5, 3991600), (8, 2494750), (10, 1995800), (16, 1247375), (17, 1174000), (20, 997900), (25, 798320), (34, 587000), (40, 498950), (50, 399160), (68, 293500), (80, 249475), (85, 234800), (100, 199580), (125, 159664), (136, 146750), (170, 117400), (200, 99790), (250, 79832), (272, 73375), (340, 58700), (400, 49895), (425, 46960), (500, 39916), (587, 34000), (680, 29350), (850, 23480), (1000, 19958), (1174, 17000), (1360, 14675), (1700, 11740), (2000, 9979), (2125, 9392), (2348, 8500), (2935, 6800), (3400, 5870), (4250, 4696)]