21673640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31873}}^1$

素因数の和:31901

約数の個数: 32

約数和(自身を含む): 51635880

約数和(自身を除く): 29962240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 31873, 63746, 127492, 159365, 254984, 318730, 541841, 637460, 1083682, 1274920, 2167364, 2709205, 4334728, 5418410, 10836820, 21673640]

約数ペア:

[(1, 21673640), (2, 10836820), (4, 5418410), (5, 4334728), (8, 2709205), (10, 2167364), (17, 1274920), (20, 1083682), (34, 637460), (40, 541841), (68, 318730), (85, 254984), (136, 159365), (170, 127492), (340, 63746), (680, 31873)]