64906400

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^2$

素因数の和:191

約数の個数: 108

約数和(自身を含む): 172828782

約数和(自身を除く): 107922382

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 65, 79, 80, 100, 104, 130, 158, 160, 200, 208, 260, 316, 325, 395, 400, 416, 520, 632, 650, 790, 800, 1027, 1040, 1264, 1300, 1580, 1975, 2054, 2080, 2528, 2600, 3160, 3950, 4108, 5135, 5200, 6241, 6320, 7900, 8216, 10270, 10400, 12482, 12640, 15800, 16432, 20540, 24964, 25675, 31205, 31600, 32864, 41080, 49928, 51350, 62410, 63200, 81133, 82160, 99856, 102700, 124820, 156025, 162266, 164320, 199712, 205400, 249640, 312050, 324532, 405665, 410800, 499280, 624100, 649064, 811330, 821600, 998560, 1248200, 1298128, 1622660, 2028325, 2496400, 2596256, 3245320, 4056650, 4992800, 6490640, 8113300, 12981280, 16226600, 32453200, 64906400]

約数ペア:

[(1, 64906400), (2, 32453200), (4, 16226600), (5, 12981280), (8, 8113300), (10, 6490640), (13, 4992800), (16, 4056650), (20, 3245320), (25, 2596256), (26, 2496400), (32, 2028325), (40, 1622660), (50, 1298128), (52, 1248200), (65, 998560), (79, 821600), (80, 811330), (100, 649064), (104, 624100), (130, 499280), (158, 410800), (160, 405665), (200, 324532), (208, 312050), (260, 249640), (316, 205400), (325, 199712), (395, 164320), (400, 162266), (416, 156025), (520, 124820), (632, 102700), (650, 99856), (790, 82160), (800, 81133), (1027, 63200), (1040, 62410), (1264, 51350), (1300, 49928), (1580, 41080), (1975, 32864), (2054, 31600), (2080, 31205), (2528, 25675), (2600, 24964), (3160, 20540), (3950, 16432), (4108, 15800), (5135, 12640), (5200, 12482), (6241, 10400), (6320, 10270), (7900, 8216)]