18400528

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1109}}^1$

素因数の和:1195

約数の個数: 40

約数和(自身を含む): 38401560

約数和(自身を除く): 20001032

約数列:

[1, 2, 4, 8, 16, 17, 34, 61, 68, 122, 136, 244, 272, 488, 976, 1037, 1109, 2074, 2218, 4148, 4436, 8296, 8872, 16592, 17744, 18853, 37706, 67649, 75412, 135298, 150824, 270596, 301648, 541192, 1082384, 1150033, 2300066, 4600132, 9200264, 18400528]

約数ペア:

[(1, 18400528), (2, 9200264), (4, 4600132), (8, 2300066), (16, 1150033), (17, 1082384), (34, 541192), (61, 301648), (68, 270596), (122, 150824), (136, 135298), (244, 75412), (272, 67649), (488, 37706), (976, 18853), (1037, 17744), (1109, 16592), (2074, 8872), (2218, 8296), (4148, 4436)]