21390228

素因数分解:

$2^2\times 3^2\times {\mathrm{367}}^1\times {\mathrm{1619}}^1$

素因数の和:1996

約数の個数: 36

約数和(自身を含む): 54250560

約数和(自身を除く): 32860332

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 367, 734, 1101, 1468, 1619, 2202, 3238, 3303, 4404, 4857, 6476, 6606, 9714, 13212, 14571, 19428, 29142, 58284, 594173, 1188346, 1782519, 2376692, 3565038, 5347557, 7130076, 10695114, 21390228]

約数ペア:

[(1, 21390228), (2, 10695114), (3, 7130076), (4, 5347557), (6, 3565038), (9, 2376692), (12, 1782519), (18, 1188346), (36, 594173), (367, 58284), (734, 29142), (1101, 19428), (1468, 14571), (1619, 13212), (2202, 9714), (3238, 6606), (3303, 6476), (4404, 4857)]