81405975

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{8161}}^1$

素因数の和:8200

約数の個数: 48

約数和(自身を含む): 161934080

約数和(自身を除く): 80528105

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 57, 75, 95, 105, 133, 175, 285, 399, 475, 525, 665, 1425, 1995, 3325, 8161, 9975, 24483, 40805, 57127, 122415, 155059, 171381, 204025, 285635, 465177, 612075, 775295, 856905, 1085413, 1428175, 2325885, 3256239, 3876475, 4284525, 5427065, 11629425, 16281195, 27135325, 81405975]

約数ペア:

[(1, 81405975), (3, 27135325), (5, 16281195), (7, 11629425), (15, 5427065), (19, 4284525), (21, 3876475), (25, 3256239), (35, 2325885), (57, 1428175), (75, 1085413), (95, 856905), (105, 775295), (133, 612075), (175, 465177), (285, 285635), (399, 204025), (475, 171381), (525, 155059), (665, 122415), (1425, 57127), (1995, 40805), (3325, 24483), (8161, 9975)]