668845520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{51929}}^1$

素因数の和:51972

約数の個数: 80

約数和(自身を含む): 1854524160

約数和(自身を除く): 1185678640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1610, 1840, 2576, 3220, 6440, 12880, 51929, 103858, 207716, 259645, 363503, 415432, 519290, 727006, 830864, 1038580, 1194367, 1454012, 1817515, 2077160, 2388734, 2908024, 3635030, 4154320, 4777468, 5816048, 5971835, 7270060, 8360569, 9554936, 11943670, 14540120, 16721138, 19109872, 23887340, 29080240, 33442276, 41802845, 47774680, 66884552, 83605690, 95549360, 133769104, 167211380, 334422760, 668845520]

約数ペア:

[(1, 668845520), (2, 334422760), (4, 167211380), (5, 133769104), (7, 95549360), (8, 83605690), (10, 66884552), (14, 47774680), (16, 41802845), (20, 33442276), (23, 29080240), (28, 23887340), (35, 19109872), (40, 16721138), (46, 14540120), (56, 11943670), (70, 9554936), (80, 8360569), (92, 7270060), (112, 5971835), (115, 5816048), (140, 4777468), (161, 4154320), (184, 3635030), (230, 2908024), (280, 2388734), (322, 2077160), (368, 1817515), (460, 1454012), (560, 1194367), (644, 1038580), (805, 830864), (920, 727006), (1288, 519290), (1610, 415432), (1840, 363503), (2576, 259645), (3220, 207716), (6440, 103858), (12880, 51929)]