20729456

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6199}}^1$

素因数の和:6237

約数の個数: 40

約数和(自身を含む): 46128000

約数和(自身を除く): 25398544

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 38, 44, 76, 88, 152, 176, 209, 304, 418, 836, 1672, 3344, 6199, 12398, 24796, 49592, 68189, 99184, 117781, 136378, 235562, 272756, 471124, 545512, 942248, 1091024, 1295591, 1884496, 2591182, 5182364, 10364728, 20729456]

約数ペア:

[(1, 20729456), (2, 10364728), (4, 5182364), (8, 2591182), (11, 1884496), (16, 1295591), (19, 1091024), (22, 942248), (38, 545512), (44, 471124), (76, 272756), (88, 235562), (152, 136378), (176, 117781), (209, 99184), (304, 68189), (418, 49592), (836, 24796), (1672, 12398), (3344, 6199)]