20559175

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1291}}^1$

素因数の和:1328

約数の個数: 36

約数和(自身を含む): 31961496

約数和(自身を除く): 11402321

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 91, 175, 245, 325, 455, 637, 1225, 1291, 2275, 3185, 6455, 9037, 15925, 16783, 32275, 45185, 63259, 83915, 117481, 225925, 316295, 419575, 587405, 822367, 1581475, 2937025, 4111835, 20559175]

約数ペア:

[(1, 20559175), (5, 4111835), (7, 2937025), (13, 1581475), (25, 822367), (35, 587405), (49, 419575), (65, 316295), (91, 225925), (175, 117481), (245, 83915), (325, 63259), (455, 45185), (637, 32275), (1225, 16783), (1291, 15925), (2275, 9037), (3185, 6455)]