20001975

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1229}}^1$

素因数の和:1280

約数の個数: 48

約数和(自身を含む): 39045120

約数和(自身を除く): 19043145

約数列:

[1, 3, 5, 7, 15, 21, 25, 31, 35, 75, 93, 105, 155, 175, 217, 465, 525, 651, 775, 1085, 1229, 2325, 3255, 3687, 5425, 6145, 8603, 16275, 18435, 25809, 30725, 38099, 43015, 92175, 114297, 129045, 190495, 215075, 266693, 571485, 645225, 800079, 952475, 1333465, 2857425, 4000395, 6667325, 20001975]

約数ペア:

[(1, 20001975), (3, 6667325), (5, 4000395), (7, 2857425), (15, 1333465), (21, 952475), (25, 800079), (31, 645225), (35, 571485), (75, 266693), (93, 215075), (105, 190495), (155, 129045), (175, 114297), (217, 92175), (465, 43015), (525, 38099), (651, 30725), (775, 25809), (1085, 18435), (1229, 16275), (2325, 8603), (3255, 6145), (3687, 5425)]