20729912

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{19483}}^1$

素因数の和:19515

約数の個数: 32

約数和(自身を含む): 46761600

約数和(自身を除く): 26031688

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 19483, 38966, 77932, 136381, 155864, 272762, 370177, 545524, 740354, 1091048, 1480708, 2591239, 2961416, 5182478, 10364956, 20729912]

約数ペア:

[(1, 20729912), (2, 10364956), (4, 5182478), (7, 2961416), (8, 2591239), (14, 1480708), (19, 1091048), (28, 740354), (38, 545524), (56, 370177), (76, 272762), (133, 155864), (152, 136381), (266, 77932), (532, 38966), (1064, 19483)]