21145670

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1223}}^1$

素因数の和:1269

約数の個数: 64

約数和(自身を含む): 49351680

約数和(自身を除く): 28206010

約数列:

[1, 2, 5, 7, 10, 13, 14, 19, 26, 35, 38, 65, 70, 91, 95, 130, 133, 182, 190, 247, 266, 455, 494, 665, 910, 1223, 1235, 1330, 1729, 2446, 2470, 3458, 6115, 8561, 8645, 12230, 15899, 17122, 17290, 23237, 31798, 42805, 46474, 79495, 85610, 111293, 116185, 158990, 162659, 222586, 232370, 302081, 325318, 556465, 604162, 813295, 1112930, 1510405, 1626590, 2114567, 3020810, 4229134, 10572835, 21145670]

約数ペア:

[(1, 21145670), (2, 10572835), (5, 4229134), (7, 3020810), (10, 2114567), (13, 1626590), (14, 1510405), (19, 1112930), (26, 813295), (35, 604162), (38, 556465), (65, 325318), (70, 302081), (91, 232370), (95, 222586), (130, 162659), (133, 158990), (182, 116185), (190, 111293), (247, 85610), (266, 79495), (455, 46474), (494, 42805), (665, 31798), (910, 23237), (1223, 17290), (1235, 17122), (1330, 15899), (1729, 12230), (2446, 8645), (2470, 8561), (3458, 6115)]