20438655

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{547}}^1$

素因数の和:655

約数の個数: 32

約数和(自身を含む): 34089984

約数和(自身を除く): 13651329

約数列:

[1, 3, 5, 15, 47, 53, 141, 159, 235, 265, 547, 705, 795, 1641, 2491, 2735, 7473, 8205, 12455, 25709, 28991, 37365, 77127, 86973, 128545, 144955, 385635, 434865, 1362577, 4087731, 6812885, 20438655]

約数ペア:

[(1, 20438655), (3, 6812885), (5, 4087731), (15, 1362577), (47, 434865), (53, 385635), (141, 144955), (159, 128545), (235, 86973), (265, 77127), (547, 37365), (705, 28991), (795, 25709), (1641, 12455), (2491, 8205), (2735, 7473)]