21339240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13679}}^1$

素因数の和:13706

約数の個数: 64

約数和(自身を含む): 68947200

約数和(自身を除く): 47607960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13679, 27358, 41037, 54716, 68395, 82074, 109432, 136790, 164148, 177827, 205185, 273580, 328296, 355654, 410370, 533481, 547160, 711308, 820740, 889135, 1066962, 1422616, 1641480, 1778270, 2133924, 2667405, 3556540, 4267848, 5334810, 7113080, 10669620, 21339240]

約数ペア:

[(1, 21339240), (2, 10669620), (3, 7113080), (4, 5334810), (5, 4267848), (6, 3556540), (8, 2667405), (10, 2133924), (12, 1778270), (13, 1641480), (15, 1422616), (20, 1066962), (24, 889135), (26, 820740), (30, 711308), (39, 547160), (40, 533481), (52, 410370), (60, 355654), (65, 328296), (78, 273580), (104, 205185), (120, 177827), (130, 164148), (156, 136790), (195, 109432), (260, 82074), (312, 68395), (390, 54716), (520, 41037), (780, 27358), (1560, 13679)]