20506605

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{541}}^1$

素因数の和:594

約数の個数: 48

約数和(自身を含む): 39648384

約数和(自身を除く): 19141779

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 361, 399, 541, 665, 1083, 1623, 1805, 1995, 2527, 2705, 3787, 5415, 7581, 8115, 10279, 11361, 12635, 18935, 30837, 37905, 51395, 56805, 71953, 154185, 195301, 215859, 359765, 585903, 976505, 1079295, 1367107, 2929515, 4101321, 6835535, 20506605]

約数ペア:

[(1, 20506605), (3, 6835535), (5, 4101321), (7, 2929515), (15, 1367107), (19, 1079295), (21, 976505), (35, 585903), (57, 359765), (95, 215859), (105, 195301), (133, 154185), (285, 71953), (361, 56805), (399, 51395), (541, 37905), (665, 30837), (1083, 18935), (1623, 12635), (1805, 11361), (1995, 10279), (2527, 8115), (2705, 7581), (3787, 5415)]