20566175

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 31997952

約数和(自身を除く): 11431777

約数列:

[1, 5, 7, 17, 25, 31, 35, 85, 119, 155, 175, 217, 223, 425, 527, 595, 775, 1085, 1115, 1561, 2635, 2975, 3689, 3791, 5425, 5575, 6913, 7805, 13175, 18445, 18955, 26537, 34565, 39025, 48391, 92225, 94775, 117521, 132685, 172825, 241955, 587605, 663425, 822647, 1209775, 2938025, 4113235, 20566175]

約数ペア:

[(1, 20566175), (5, 4113235), (7, 2938025), (17, 1209775), (25, 822647), (31, 663425), (35, 587605), (85, 241955), (119, 172825), (155, 132685), (175, 117521), (217, 94775), (223, 92225), (425, 48391), (527, 39025), (595, 34565), (775, 26537), (1085, 18955), (1115, 18445), (1561, 13175), (2635, 7805), (2975, 6913), (3689, 5575), (3791, 5425)]