18786536

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{281}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 36191880

約数和(自身を除く): 17405344

約数列:

[1, 2, 4, 8, 61, 122, 137, 244, 274, 281, 488, 548, 562, 1096, 1124, 2248, 8357, 16714, 17141, 33428, 34282, 38497, 66856, 68564, 76994, 137128, 153988, 307976, 2348317, 4696634, 9393268, 18786536]

約数ペア:

[(1, 18786536), (2, 9393268), (4, 4696634), (8, 2348317), (61, 307976), (122, 153988), (137, 137128), (244, 76994), (274, 68564), (281, 66856), (488, 38497), (548, 34282), (562, 33428), (1096, 17141), (1124, 16714), (2248, 8357)]