21115365

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1723}}^1$

素因数の和:1793

約数の個数: 32

約数和(自身を含む): 36410880

約数和(自身を除く): 15295515

約数列:

[1, 3, 5, 15, 19, 43, 57, 95, 129, 215, 285, 645, 817, 1723, 2451, 4085, 5169, 8615, 12255, 25845, 32737, 74089, 98211, 163685, 222267, 370445, 491055, 1111335, 1407691, 4223073, 7038455, 21115365]

約数ペア:

[(1, 21115365), (3, 7038455), (5, 4223073), (15, 1407691), (19, 1111335), (43, 491055), (57, 370445), (95, 222267), (129, 163685), (215, 98211), (285, 74089), (645, 32737), (817, 25845), (1723, 12255), (2451, 8615), (4085, 5169)]