77867440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{659}}^1$

素因数の和:890

約数の個数: 80

約数和(自身を含む): 208200960

約数和(自身を除く): 130333520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 211, 280, 422, 560, 659, 844, 1055, 1318, 1477, 1688, 2110, 2636, 2954, 3295, 3376, 4220, 4613, 5272, 5908, 6590, 7385, 8440, 9226, 10544, 11816, 13180, 14770, 16880, 18452, 23065, 23632, 26360, 29540, 36904, 46130, 52720, 59080, 73808, 92260, 118160, 139049, 184520, 278098, 369040, 556196, 695245, 973343, 1112392, 1390490, 1946686, 2224784, 2780980, 3893372, 4866715, 5561960, 7786744, 9733430, 11123920, 15573488, 19466860, 38933720, 77867440]

約数ペア:

[(1, 77867440), (2, 38933720), (4, 19466860), (5, 15573488), (7, 11123920), (8, 9733430), (10, 7786744), (14, 5561960), (16, 4866715), (20, 3893372), (28, 2780980), (35, 2224784), (40, 1946686), (56, 1390490), (70, 1112392), (80, 973343), (112, 695245), (140, 556196), (211, 369040), (280, 278098), (422, 184520), (560, 139049), (659, 118160), (844, 92260), (1055, 73808), (1318, 59080), (1477, 52720), (1688, 46130), (2110, 36904), (2636, 29540), (2954, 26360), (3295, 23632), (3376, 23065), (4220, 18452), (4613, 16880), (5272, 14770), (5908, 13180), (6590, 11816), (7385, 10544), (8440, 9226)]