64946960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{317}}^1$

素因数の和:540

約数の個数: 80

約数和(自身を含む): 163958256

約数和(自身を除く): 99011296

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 197, 208, 260, 317, 394, 520, 634, 788, 985, 1040, 1268, 1576, 1585, 1970, 2536, 2561, 3152, 3170, 3940, 4121, 5072, 5122, 6340, 7880, 8242, 10244, 12680, 12805, 15760, 16484, 20488, 20605, 25360, 25610, 32968, 40976, 41210, 51220, 62449, 65936, 82420, 102440, 124898, 164840, 204880, 249796, 312245, 329680, 499592, 624490, 811837, 999184, 1248980, 1623674, 2497960, 3247348, 4059185, 4995920, 6494696, 8118370, 12989392, 16236740, 32473480, 64946960]

約数ペア:

[(1, 64946960), (2, 32473480), (4, 16236740), (5, 12989392), (8, 8118370), (10, 6494696), (13, 4995920), (16, 4059185), (20, 3247348), (26, 2497960), (40, 1623674), (52, 1248980), (65, 999184), (80, 811837), (104, 624490), (130, 499592), (197, 329680), (208, 312245), (260, 249796), (317, 204880), (394, 164840), (520, 124898), (634, 102440), (788, 82420), (985, 65936), (1040, 62449), (1268, 51220), (1576, 41210), (1585, 40976), (1970, 32968), (2536, 25610), (2561, 25360), (3152, 20605), (3170, 20488), (3940, 16484), (4121, 15760), (5072, 12805), (5122, 12680), (6340, 10244), (7880, 8242)]