20558853

素因数分解:

$3^4\times 7^1\times {\mathrm{101}}^1\times {\mathrm{359}}^1$

素因数の和:479

約数の個数: 40

約数和(自身を含む): 35544960

約数和(自身を除く): 14986107

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 101, 189, 303, 359, 567, 707, 909, 1077, 2121, 2513, 2727, 3231, 6363, 7539, 8181, 9693, 19089, 22617, 29079, 36259, 57267, 67851, 108777, 203553, 253813, 326331, 761439, 978993, 2284317, 2936979, 6852951, 20558853]

約数ペア:

[(1, 20558853), (3, 6852951), (7, 2936979), (9, 2284317), (21, 978993), (27, 761439), (63, 326331), (81, 253813), (101, 203553), (189, 108777), (303, 67851), (359, 57267), (567, 36259), (707, 29079), (909, 22617), (1077, 19089), (2121, 9693), (2513, 8181), (2727, 7539), (3231, 6363)]