72700880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{659}}^1$

素因数の和:876

約数の個数: 80

約数和(自身を含む): 194451840

約数和(自身を除く): 121750960

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, 659, 788, 985, 1318, 1379, 1576, 1970, 2636, 2758, 3152, 3295, 3940, 4613, 5272, 5516, 6590, 6895, 7880, 9226, 10544, 11032, 13180, 13790, 15760, 18452, 22064, 23065, 26360, 27580, 36904, 46130, 52720, 55160, 73808, 92260, 110320, 129823, 184520, 259646, 369040, 519292, 649115, 908761, 1038584, 1298230, 1817522, 2077168, 2596460, 3635044, 4543805, 5192920, 7270088, 9087610, 10385840, 14540176, 18175220, 36350440, 72700880]

約数ペア:

[(1, 72700880), (2, 36350440), (4, 18175220), (5, 14540176), (7, 10385840), (8, 9087610), (10, 7270088), (14, 5192920), (16, 4543805), (20, 3635044), (28, 2596460), (35, 2077168), (40, 1817522), (56, 1298230), (70, 1038584), (80, 908761), (112, 649115), (140, 519292), (197, 369040), (280, 259646), (394, 184520), (560, 129823), (659, 110320), (788, 92260), (985, 73808), (1318, 55160), (1379, 52720), (1576, 46130), (1970, 36904), (2636, 27580), (2758, 26360), (3152, 23065), (3295, 22064), (3940, 18452), (4613, 15760), (5272, 13790), (5516, 13180), (6590, 11032), (6895, 10544), (7880, 9226)]