18381008

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{509}}^1$

素因数の和:615

約数の個数: 40

約数和(自身を含む): 37248360

約数和(自身を除く): 18867352

約数列:

[1, 2, 4, 8, 16, 37, 61, 74, 122, 148, 244, 296, 488, 509, 592, 976, 1018, 2036, 2257, 4072, 4514, 8144, 9028, 18056, 18833, 31049, 36112, 37666, 62098, 75332, 124196, 150664, 248392, 301328, 496784, 1148813, 2297626, 4595252, 9190504, 18381008]

約数ペア:

[(1, 18381008), (2, 9190504), (4, 4595252), (8, 2297626), (16, 1148813), (37, 496784), (61, 301328), (74, 248392), (122, 150664), (148, 124196), (244, 75332), (296, 62098), (488, 37666), (509, 36112), (592, 31049), (976, 18833), (1018, 18056), (2036, 9028), (2257, 8144), (4072, 4514)]