20837240

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30643}}^1$

素因数の和:30671

約数の個数: 32

約数和(自身を含む): 49643280

約数和(自身を除く): 28806040

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30643, 61286, 122572, 153215, 245144, 306430, 520931, 612860, 1041862, 1225720, 2083724, 2604655, 4167448, 5209310, 10418620, 20837240]

約数ペア:

[(1, 20837240), (2, 10418620), (4, 5209310), (5, 4167448), (8, 2604655), (10, 2083724), (17, 1225720), (20, 1041862), (34, 612860), (40, 520931), (68, 306430), (85, 245144), (136, 153215), (170, 122572), (340, 61286), (680, 30643)]