20947264

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1481}}^1$

素因数の和:1523

約数の個数: 56

約数和(自身を含む): 47429928

約数和(自身を除く): 26482664

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 64, 68, 104, 136, 208, 221, 272, 416, 442, 544, 832, 884, 1088, 1481, 1768, 2962, 3536, 5924, 7072, 11848, 14144, 19253, 23696, 25177, 38506, 47392, 50354, 77012, 94784, 100708, 154024, 201416, 308048, 327301, 402832, 616096, 654602, 805664, 1232192, 1309204, 1611328, 2618408, 5236816, 10473632, 20947264]

約数ペア:

[(1, 20947264), (2, 10473632), (4, 5236816), (8, 2618408), (13, 1611328), (16, 1309204), (17, 1232192), (26, 805664), (32, 654602), (34, 616096), (52, 402832), (64, 327301), (68, 308048), (104, 201416), (136, 154024), (208, 100708), (221, 94784), (272, 77012), (416, 50354), (442, 47392), (544, 38506), (832, 25177), (884, 23696), (1088, 19253), (1481, 14144), (1768, 11848), (2962, 7072), (3536, 5924)]