217439425

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{269}}^1$

素因数の和:466

約数の個数: 48

約数和(自身を含む): 321408000

約数和(自身を除く): 103968575

約数列:

[1, 5, 7, 25, 31, 35, 149, 155, 175, 217, 269, 745, 775, 1043, 1085, 1345, 1883, 3725, 4619, 5215, 5425, 6725, 8339, 9415, 23095, 26075, 32333, 40081, 41695, 47075, 58373, 115475, 161665, 200405, 208475, 280567, 291865, 808325, 1002025, 1242511, 1402835, 1459325, 6212555, 7014175, 8697577, 31062775, 43487885, 217439425]

約数ペア:

[(1, 217439425), (5, 43487885), (7, 31062775), (25, 8697577), (31, 7014175), (35, 6212555), (149, 1459325), (155, 1402835), (175, 1242511), (217, 1002025), (269, 808325), (745, 291865), (775, 280567), (1043, 208475), (1085, 200405), (1345, 161665), (1883, 115475), (3725, 58373), (4619, 47075), (5215, 41695), (5425, 40081), (6725, 32333), (8339, 26075), (9415, 23095)]