21380624

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1327}}^1$

素因数の和:1407

約数の個数: 40

約数和(自身を含む): 44461440

約数和(自身を除く): 23080816

約数列:

[1, 2, 4, 8, 16, 19, 38, 53, 76, 106, 152, 212, 304, 424, 848, 1007, 1327, 2014, 2654, 4028, 5308, 8056, 10616, 16112, 21232, 25213, 50426, 70331, 100852, 140662, 201704, 281324, 403408, 562648, 1125296, 1336289, 2672578, 5345156, 10690312, 21380624]

約数ペア:

[(1, 21380624), (2, 10690312), (4, 5345156), (8, 2672578), (16, 1336289), (19, 1125296), (38, 562648), (53, 403408), (76, 281324), (106, 201704), (152, 140662), (212, 100852), (304, 70331), (424, 50426), (848, 25213), (1007, 21232), (1327, 16112), (2014, 10616), (2654, 8056), (4028, 5308)]