18815312

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:351

約数の個数: 40

約数和(自身を含む): 37575720

約数和(自身を除く): 18760408

約数列:

[1, 2, 4, 8, 16, 73, 89, 146, 178, 181, 292, 356, 362, 584, 712, 724, 1168, 1424, 1448, 2896, 6497, 12994, 13213, 16109, 25988, 26426, 32218, 51976, 52852, 64436, 103952, 105704, 128872, 211408, 257744, 1175957, 2351914, 4703828, 9407656, 18815312]

約数ペア:

[(1, 18815312), (2, 9407656), (4, 4703828), (8, 2351914), (16, 1175957), (73, 257744), (89, 211408), (146, 128872), (178, 105704), (181, 103952), (292, 64436), (356, 52852), (362, 51976), (584, 32218), (712, 26426), (724, 25988), (1168, 16109), (1424, 13213), (1448, 12994), (2896, 6497)]