21331590

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{647}}^1$

素因数の和:821

約数の個数: 64

約数和(自身を含む): 58973184

約数和(自身を除く): 37641594

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 157, 210, 314, 471, 647, 785, 942, 1099, 1294, 1570, 1941, 2198, 2355, 3235, 3297, 3882, 4529, 4710, 5495, 6470, 6594, 9058, 9705, 10990, 13587, 16485, 19410, 22645, 27174, 32970, 45290, 67935, 101579, 135870, 203158, 304737, 507895, 609474, 711053, 1015790, 1422106, 1523685, 2133159, 3047370, 3555265, 4266318, 7110530, 10665795, 21331590]

約数ペア:

[(1, 21331590), (2, 10665795), (3, 7110530), (5, 4266318), (6, 3555265), (7, 3047370), (10, 2133159), (14, 1523685), (15, 1422106), (21, 1015790), (30, 711053), (35, 609474), (42, 507895), (70, 304737), (105, 203158), (157, 135870), (210, 101579), (314, 67935), (471, 45290), (647, 32970), (785, 27174), (942, 22645), (1099, 19410), (1294, 16485), (1570, 13587), (1941, 10990), (2198, 9705), (2355, 9058), (3235, 6594), (3297, 6470), (3882, 5495), (4529, 4710)]