18338480

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5591}}^1$

素因数の和:5645

約数の個数: 40

約数和(自身を含む): 43684704

約数和(自身を除く): 25346224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 5591, 11182, 22364, 27955, 44728, 55910, 89456, 111820, 223640, 229231, 447280, 458462, 916924, 1146155, 1833848, 2292310, 3667696, 4584620, 9169240, 18338480]

約数ペア:

[(1, 18338480), (2, 9169240), (4, 4584620), (5, 3667696), (8, 2292310), (10, 1833848), (16, 1146155), (20, 916924), (40, 458462), (41, 447280), (80, 229231), (82, 223640), (164, 111820), (205, 89456), (328, 55910), (410, 44728), (656, 27955), (820, 22364), (1640, 11182), (3280, 5591)]