1990805880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{2370007}}^1$

素因数の和:2370028

約数の個数: 64

約数和(自身を含む): 6825623040

約数和(自身を除く): 4834817160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 2370007, 4740014, 7110021, 9480028, 11850035, 14220042, 16590049, 18960056, 23700070, 28440084, 33180098, 35550105, 47400140, 49770147, 56880168, 66360196, 71100210, 82950245, 94800280, 99540294, 132720392, 142200420, 165900490, 199080588, 248850735, 284400840, 331800980, 398161176, 497701470, 663601960, 995402940, 1990805880]

約数ペア:

[(1, 1990805880), (2, 995402940), (3, 663601960), (4, 497701470), (5, 398161176), (6, 331800980), (7, 284400840), (8, 248850735), (10, 199080588), (12, 165900490), (14, 142200420), (15, 132720392), (20, 99540294), (21, 94800280), (24, 82950245), (28, 71100210), (30, 66360196), (35, 56880168), (40, 49770147), (42, 47400140), (56, 35550105), (60, 33180098), (70, 28440084), (84, 23700070), (105, 18960056), (120, 16590049), (140, 14220042), (168, 11850035), (210, 9480028), (280, 7110021), (420, 4740014), (840, 2370007)]