12865000

素因数分解:

$2^3\times 5^4\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:140

約数の個数: 80

約数和(自身を含む): 31489920

約数和(自身を除く): 18624920

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 83, 100, 124, 125, 155, 166, 200, 248, 250, 310, 332, 415, 500, 620, 625, 664, 775, 830, 1000, 1240, 1250, 1550, 1660, 2075, 2500, 2573, 3100, 3320, 3875, 4150, 5000, 5146, 6200, 7750, 8300, 10292, 10375, 12865, 15500, 16600, 19375, 20584, 20750, 25730, 31000, 38750, 41500, 51460, 51875, 64325, 77500, 83000, 102920, 103750, 128650, 155000, 207500, 257300, 321625, 415000, 514600, 643250, 1286500, 1608125, 2573000, 3216250, 6432500, 12865000]

約数ペア:

[(1, 12865000), (2, 6432500), (4, 3216250), (5, 2573000), (8, 1608125), (10, 1286500), (20, 643250), (25, 514600), (31, 415000), (40, 321625), (50, 257300), (62, 207500), (83, 155000), (100, 128650), (124, 103750), (125, 102920), (155, 83000), (166, 77500), (200, 64325), (248, 51875), (250, 51460), (310, 41500), (332, 38750), (415, 31000), (500, 25730), (620, 20750), (625, 20584), (664, 19375), (775, 16600), (830, 15500), (1000, 12865), (1240, 10375), (1250, 10292), (1550, 8300), (1660, 7750), (2075, 6200), (2500, 5146), (2573, 5000), (3100, 4150), (3320, 3875)]