20575478

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:237

約数の個数: 64

約数和(自身を含む): 41499648

約数和(自身を除く): 20924170

約数列:

[1, 2, 7, 11, 14, 22, 23, 37, 46, 74, 77, 154, 157, 161, 253, 259, 314, 322, 407, 506, 518, 814, 851, 1099, 1702, 1727, 1771, 2198, 2849, 3454, 3542, 3611, 5698, 5809, 5957, 7222, 9361, 11618, 11914, 12089, 18722, 24178, 25277, 39721, 40663, 50554, 63899, 65527, 79442, 81326, 127798, 131054, 133607, 267214, 278047, 447293, 556094, 894586, 935249, 1469677, 1870498, 2939354, 10287739, 20575478]

約数ペア:

[(1, 20575478), (2, 10287739), (7, 2939354), (11, 1870498), (14, 1469677), (22, 935249), (23, 894586), (37, 556094), (46, 447293), (74, 278047), (77, 267214), (154, 133607), (157, 131054), (161, 127798), (253, 81326), (259, 79442), (314, 65527), (322, 63899), (407, 50554), (506, 40663), (518, 39721), (814, 25277), (851, 24178), (1099, 18722), (1702, 12089), (1727, 11914), (1771, 11618), (2198, 9361), (2849, 7222), (3454, 5957), (3542, 5809), (3611, 5698)]