20881304

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{8081}}^1$

素因数の和:8123

約数の個数: 32

約数和(自身を含む): 43642800

約数和(自身を除く): 22761496

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 646, 1292, 2584, 8081, 16162, 32324, 64648, 137377, 153539, 274754, 307078, 549508, 614156, 1099016, 1228312, 2610163, 5220326, 10440652, 20881304]

約数ペア:

[(1, 20881304), (2, 10440652), (4, 5220326), (8, 2610163), (17, 1228312), (19, 1099016), (34, 614156), (38, 549508), (68, 307078), (76, 274754), (136, 153539), (152, 137377), (323, 64648), (646, 32324), (1292, 16162), (2584, 8081)]