20961160

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47639}}^1$

素因数の和:47661

約数の個数: 32

約数和(自身を含む): 51451200

約数和(自身を除く): 30490040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47639, 95278, 190556, 238195, 381112, 476390, 524029, 952780, 1048058, 1905560, 2096116, 2620145, 4192232, 5240290, 10480580, 20961160]

約数ペア:

[(1, 20961160), (2, 10480580), (4, 5240290), (5, 4192232), (8, 2620145), (10, 2096116), (11, 1905560), (20, 1048058), (22, 952780), (40, 524029), (44, 476390), (55, 381112), (88, 238195), (110, 190556), (220, 95278), (440, 47639)]