20120939975

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{193}}^1\times {\mathrm{499}}^1$

素因数の和:900

約数の個数: 48

約数和(自身を含む): 25727892000

約数和(自身を除く): 5606952025

約数列:

[1, 5, 25, 61, 137, 193, 305, 499, 685, 965, 1525, 2495, 3425, 4825, 8357, 11773, 12475, 26441, 30439, 41785, 58865, 68363, 96307, 132205, 152195, 208925, 294325, 341815, 481535, 661025, 760975, 1612901, 1709075, 2407675, 4170143, 5874727, 8064505, 13194059, 20850715, 29373635, 40322525, 65970295, 104253575, 146868175, 329851475, 804837599, 4024187995, 20120939975]

約数ペア:

[(1, 20120939975), (5, 4024187995), (25, 804837599), (61, 329851475), (137, 146868175), (193, 104253575), (305, 65970295), (499, 40322525), (685, 29373635), (965, 20850715), (1525, 13194059), (2495, 8064505), (3425, 5874727), (4825, 4170143), (8357, 2407675), (11773, 1709075), (12475, 1612901), (26441, 760975), (30439, 661025), (41785, 481535), (58865, 341815), (68363, 294325), (96307, 208925), (132205, 152195)]