221437240

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{325643}}^1$

素因数の和:325671

約数の個数: 32

約数和(自身を含む): 527543280

約数和(自身を除く): 306106040

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 325643, 651286, 1302572, 1628215, 2605144, 3256430, 5535931, 6512860, 11071862, 13025720, 22143724, 27679655, 44287448, 55359310, 110718620, 221437240]

約数ペア:

[(1, 221437240), (2, 110718620), (4, 55359310), (5, 44287448), (8, 27679655), (10, 22143724), (17, 13025720), (20, 11071862), (34, 6512860), (40, 5535931), (68, 3256430), (85, 2605144), (136, 1628215), (170, 1302572), (340, 651286), (680, 325643)]