19704891

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 28569600

約数和(自身を除く): 8864709

約数列:

[1, 3, 29, 47, 61, 79, 87, 141, 183, 237, 1363, 1769, 2291, 2867, 3713, 4089, 4819, 5307, 6873, 8601, 11139, 14457, 83143, 107677, 139751, 226493, 249429, 323031, 419253, 679479, 6568297, 19704891]

約数ペア:

[(1, 19704891), (3, 6568297), (29, 679479), (47, 419253), (61, 323031), (79, 249429), (87, 226493), (141, 139751), (183, 107677), (237, 83143), (1363, 14457), (1769, 11139), (2291, 8601), (2867, 6873), (3713, 5307), (4089, 4819)]