21271425

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1307}}^1$

素因数の和:1358

約数の個数: 48

約数和(自身を含む): 41521152

約数和(自身を除く): 20249727

約数列:

[1, 3, 5, 7, 15, 21, 25, 31, 35, 75, 93, 105, 155, 175, 217, 465, 525, 651, 775, 1085, 1307, 2325, 3255, 3921, 5425, 6535, 9149, 16275, 19605, 27447, 32675, 40517, 45745, 98025, 121551, 137235, 202585, 228725, 283619, 607755, 686175, 850857, 1012925, 1418095, 3038775, 4254285, 7090475, 21271425]

約数ペア:

[(1, 21271425), (3, 7090475), (5, 4254285), (7, 3038775), (15, 1418095), (21, 1012925), (25, 850857), (31, 686175), (35, 607755), (75, 283619), (93, 228725), (105, 202585), (155, 137235), (175, 121551), (217, 98025), (465, 45745), (525, 40517), (651, 32675), (775, 27447), (1085, 19605), (1307, 16275), (2325, 9149), (3255, 6535), (3921, 5425)]