20020585

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:122

約数の個数: 48

約数和(自身を含む): 28987200

約数和(自身を除く): 8966615

約数列:

[1, 5, 13, 19, 29, 43, 65, 95, 145, 169, 215, 247, 377, 551, 559, 817, 845, 1235, 1247, 1885, 2755, 2795, 3211, 4085, 4901, 6235, 7163, 7267, 10621, 16055, 16211, 23693, 24505, 35815, 36335, 53105, 81055, 93119, 118465, 138073, 210743, 308009, 465595, 690365, 1053715, 1540045, 4004117, 20020585]

約数ペア:

[(1, 20020585), (5, 4004117), (13, 1540045), (19, 1053715), (29, 690365), (43, 465595), (65, 308009), (95, 210743), (145, 138073), (169, 118465), (215, 93119), (247, 81055), (377, 53105), (551, 36335), (559, 35815), (817, 24505), (845, 23693), (1235, 16211), (1247, 16055), (1885, 10621), (2755, 7267), (2795, 7163), (3211, 6235), (4085, 4901)]