821860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1$

素因数の和:160

約数の個数: 48

約数和(自身を含む): 1940400

約数和(自身を除く): 1118540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 109, 116, 130, 145, 218, 260, 290, 377, 436, 545, 580, 754, 1090, 1417, 1508, 1885, 2180, 2834, 3161, 3770, 5668, 6322, 7085, 7540, 12644, 14170, 15805, 28340, 31610, 41093, 63220, 82186, 164372, 205465, 410930, 821860]

約数ペア:

[(1, 821860), (2, 410930), (4, 205465), (5, 164372), (10, 82186), (13, 63220), (20, 41093), (26, 31610), (29, 28340), (52, 15805), (58, 14170), (65, 12644), (109, 7540), (116, 7085), (130, 6322), (145, 5668), (218, 3770), (260, 3161), (290, 2834), (377, 2180), (436, 1885), (545, 1508), (580, 1417), (754, 1090)]