20105969925

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^2\times {\mathrm{71}}^1\times {\mathrm{3929}}^1$

素因数の和:4075

約数の個数: 72

約数和(自身を含む): 34841430720

約数和(自身を除く): 14735460795

約数列:

[1, 3, 5, 15, 25, 31, 71, 75, 93, 155, 213, 355, 465, 775, 961, 1065, 1775, 2201, 2325, 2883, 3929, 4805, 5325, 6603, 11005, 11787, 14415, 19645, 24025, 33015, 55025, 58935, 68231, 72075, 98225, 121799, 165075, 204693, 278959, 294675, 341155, 365397, 608995, 836877, 1023465, 1394795, 1705775, 1826985, 3044975, 3775769, 4184385, 5117325, 6973975, 8647729, 9134925, 11327307, 18878845, 20921925, 25943187, 43238645, 56636535, 94394225, 129715935, 216193225, 268079599, 283182675, 648579675, 804238797, 1340397995, 4021193985, 6701989975, 20105969925]

約数ペア:

[(1, 20105969925), (3, 6701989975), (5, 4021193985), (15, 1340397995), (25, 804238797), (31, 648579675), (71, 283182675), (75, 268079599), (93, 216193225), (155, 129715935), (213, 94394225), (355, 56636535), (465, 43238645), (775, 25943187), (961, 20921925), (1065, 18878845), (1775, 11327307), (2201, 9134925), (2325, 8647729), (2883, 6973975), (3929, 5117325), (4805, 4184385), (5325, 3775769), (6603, 3044975), (11005, 1826985), (11787, 1705775), (14415, 1394795), (19645, 1023465), (24025, 836877), (33015, 608995), (55025, 365397), (58935, 341155), (68231, 294675), (72075, 278959), (98225, 204693), (121799, 165075)]