21688310

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{709}}^1$

素因数の和:765

約数の個数: 64

約数和(自身を含む): 49075200

約数和(自身を除く): 27386890

約数列:

[1, 2, 5, 7, 10, 14, 19, 23, 35, 38, 46, 70, 95, 115, 133, 161, 190, 230, 266, 322, 437, 665, 709, 805, 874, 1330, 1418, 1610, 2185, 3059, 3545, 4370, 4963, 6118, 7090, 9926, 13471, 15295, 16307, 24815, 26942, 30590, 32614, 49630, 67355, 81535, 94297, 114149, 134710, 163070, 188594, 228298, 309833, 471485, 570745, 619666, 942970, 1141490, 1549165, 2168831, 3098330, 4337662, 10844155, 21688310]

約数ペア:

[(1, 21688310), (2, 10844155), (5, 4337662), (7, 3098330), (10, 2168831), (14, 1549165), (19, 1141490), (23, 942970), (35, 619666), (38, 570745), (46, 471485), (70, 309833), (95, 228298), (115, 188594), (133, 163070), (161, 134710), (190, 114149), (230, 94297), (266, 81535), (322, 67355), (437, 49630), (665, 32614), (709, 30590), (805, 26942), (874, 24815), (1330, 16307), (1418, 15295), (1610, 13471), (2185, 9926), (3059, 7090), (3545, 6118), (4370, 4963)]