81526480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{739}}^1$

素因数の和:956

約数の個数: 80

約数和(自身を含む): 218021760

約数和(自身を除く): 136495280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 197, 280, 394, 560, 739, 788, 985, 1379, 1478, 1576, 1970, 2758, 2956, 3152, 3695, 3940, 5173, 5516, 5912, 6895, 7390, 7880, 10346, 11032, 11824, 13790, 14780, 15760, 20692, 22064, 25865, 27580, 29560, 41384, 51730, 55160, 59120, 82768, 103460, 110320, 145583, 206920, 291166, 413840, 582332, 727915, 1019081, 1164664, 1455830, 2038162, 2329328, 2911660, 4076324, 5095405, 5823320, 8152648, 10190810, 11646640, 16305296, 20381620, 40763240, 81526480]

約数ペア:

[(1, 81526480), (2, 40763240), (4, 20381620), (5, 16305296), (7, 11646640), (8, 10190810), (10, 8152648), (14, 5823320), (16, 5095405), (20, 4076324), (28, 2911660), (35, 2329328), (40, 2038162), (56, 1455830), (70, 1164664), (80, 1019081), (112, 727915), (140, 582332), (197, 413840), (280, 291166), (394, 206920), (560, 145583), (739, 110320), (788, 103460), (985, 82768), (1379, 59120), (1478, 55160), (1576, 51730), (1970, 41384), (2758, 29560), (2956, 27580), (3152, 25865), (3695, 22064), (3940, 20692), (5173, 15760), (5516, 14780), (5912, 13790), (6895, 11824), (7390, 11032), (7880, 10346)]