16128400

素因数分解:

$2^4\times 5^2\times {\mathrm{61}}^1\times {\mathrm{661}}^1$

素因数の和:740

約数の個数: 60

約数和(自身を含む): 39443284

約数和(自身を除く): 23314884

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 61, 80, 100, 122, 200, 244, 305, 400, 488, 610, 661, 976, 1220, 1322, 1525, 2440, 2644, 3050, 3305, 4880, 5288, 6100, 6610, 10576, 12200, 13220, 16525, 24400, 26440, 33050, 40321, 52880, 66100, 80642, 132200, 161284, 201605, 264400, 322568, 403210, 645136, 806420, 1008025, 1612840, 2016050, 3225680, 4032100, 8064200, 16128400]

約数ペア:

[(1, 16128400), (2, 8064200), (4, 4032100), (5, 3225680), (8, 2016050), (10, 1612840), (16, 1008025), (20, 806420), (25, 645136), (40, 403210), (50, 322568), (61, 264400), (80, 201605), (100, 161284), (122, 132200), (200, 80642), (244, 66100), (305, 52880), (400, 40321), (488, 33050), (610, 26440), (661, 24400), (976, 16525), (1220, 13220), (1322, 12200), (1525, 10576), (2440, 6610), (2644, 6100), (3050, 5288), (3305, 4880)]