21359065

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 33308928

約数和(自身を除く): 11949863

約数列:

[1, 5, 7, 13, 23, 35, 65, 91, 115, 157, 161, 169, 299, 455, 785, 805, 845, 1099, 1183, 1495, 2041, 2093, 3611, 3887, 5495, 5915, 10205, 10465, 14287, 18055, 19435, 25277, 26533, 27209, 46943, 71435, 126385, 132665, 136045, 185731, 234715, 328601, 610259, 928655, 1643005, 3051295, 4271813, 21359065]

約数ペア:

[(1, 21359065), (5, 4271813), (7, 3051295), (13, 1643005), (23, 928655), (35, 610259), (65, 328601), (91, 234715), (115, 185731), (157, 136045), (161, 132665), (169, 126385), (299, 71435), (455, 46943), (785, 27209), (805, 26533), (845, 25277), (1099, 19435), (1183, 18055), (1495, 14287), (2041, 10465), (2093, 10205), (3611, 5915), (3887, 5495)]