18637784

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:264

約数の個数: 64

約数和(自身を含む): 40953600

約数和(自身を除く): 22315816

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 71, 76, 88, 142, 152, 157, 209, 284, 314, 418, 568, 628, 781, 836, 1256, 1349, 1562, 1672, 1727, 2698, 2983, 3124, 3454, 5396, 5966, 6248, 6908, 10792, 11147, 11932, 13816, 14839, 22294, 23864, 29678, 32813, 44588, 59356, 65626, 89176, 118712, 122617, 131252, 211793, 245234, 262504, 423586, 490468, 847172, 980936, 1694344, 2329723, 4659446, 9318892, 18637784]

約数ペア:

[(1, 18637784), (2, 9318892), (4, 4659446), (8, 2329723), (11, 1694344), (19, 980936), (22, 847172), (38, 490468), (44, 423586), (71, 262504), (76, 245234), (88, 211793), (142, 131252), (152, 122617), (157, 118712), (209, 89176), (284, 65626), (314, 59356), (418, 44588), (568, 32813), (628, 29678), (781, 23864), (836, 22294), (1256, 14839), (1349, 13816), (1562, 11932), (1672, 11147), (1727, 10792), (2698, 6908), (2983, 6248), (3124, 5966), (3454, 5396)]