77988680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{25321}}^1$

素因数の和:25350

約数の個数: 64

約数和(自身を含む): 218782080

約数和(自身を除く): 140793400

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 25321, 50642, 101284, 126605, 177247, 202568, 253210, 278531, 354494, 506420, 557062, 708988, 886235, 1012840, 1114124, 1392655, 1417976, 1772470, 1949717, 2228248, 2785310, 3544940, 3899434, 5570620, 7089880, 7798868, 9748585, 11141240, 15597736, 19497170, 38994340, 77988680]

約数ペア:

[(1, 77988680), (2, 38994340), (4, 19497170), (5, 15597736), (7, 11141240), (8, 9748585), (10, 7798868), (11, 7089880), (14, 5570620), (20, 3899434), (22, 3544940), (28, 2785310), (35, 2228248), (40, 1949717), (44, 1772470), (55, 1417976), (56, 1392655), (70, 1114124), (77, 1012840), (88, 886235), (110, 708988), (140, 557062), (154, 506420), (220, 354494), (280, 278531), (308, 253210), (385, 202568), (440, 177247), (616, 126605), (770, 101284), (1540, 50642), (3080, 25321)]