99821680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{449}}^1$

素因数の和:866

約数の個数: 80

約数和(自身を含む): 266500800

約数和(自身を除く): 166679120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 397, 449, 560, 794, 898, 1588, 1796, 1985, 2245, 2779, 3143, 3176, 3592, 3970, 4490, 5558, 6286, 6352, 7184, 7940, 8980, 11116, 12572, 13895, 15715, 15880, 17960, 22232, 25144, 27790, 31430, 31760, 35920, 44464, 50288, 55580, 62860, 111160, 125720, 178253, 222320, 251440, 356506, 713012, 891265, 1247771, 1426024, 1782530, 2495542, 2852048, 3565060, 4991084, 6238855, 7130120, 9982168, 12477710, 14260240, 19964336, 24955420, 49910840, 99821680]

約数ペア:

[(1, 99821680), (2, 49910840), (4, 24955420), (5, 19964336), (7, 14260240), (8, 12477710), (10, 9982168), (14, 7130120), (16, 6238855), (20, 4991084), (28, 3565060), (35, 2852048), (40, 2495542), (56, 1782530), (70, 1426024), (80, 1247771), (112, 891265), (140, 713012), (280, 356506), (397, 251440), (449, 222320), (560, 178253), (794, 125720), (898, 111160), (1588, 62860), (1796, 55580), (1985, 50288), (2245, 44464), (2779, 35920), (3143, 31760), (3176, 31430), (3592, 27790), (3970, 25144), (4490, 22232), (5558, 17960), (6286, 15880), (6352, 15715), (7184, 13895), (7940, 12572), (8980, 11116)]