80475920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1097}}^1$

素因数の和:1248

約数の個数: 80

約数和(自身を含む): 215664768

約数和(自身を除く): 135188848

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 131, 140, 262, 280, 524, 560, 655, 917, 1048, 1097, 1310, 1834, 2096, 2194, 2620, 3668, 4388, 4585, 5240, 5485, 7336, 7679, 8776, 9170, 10480, 10970, 14672, 15358, 17552, 18340, 21940, 30716, 36680, 38395, 43880, 61432, 73360, 76790, 87760, 122864, 143707, 153580, 287414, 307160, 574828, 614320, 718535, 1005949, 1149656, 1437070, 2011898, 2299312, 2874140, 4023796, 5029745, 5748280, 8047592, 10059490, 11496560, 16095184, 20118980, 40237960, 80475920]

約数ペア:

[(1, 80475920), (2, 40237960), (4, 20118980), (5, 16095184), (7, 11496560), (8, 10059490), (10, 8047592), (14, 5748280), (16, 5029745), (20, 4023796), (28, 2874140), (35, 2299312), (40, 2011898), (56, 1437070), (70, 1149656), (80, 1005949), (112, 718535), (131, 614320), (140, 574828), (262, 307160), (280, 287414), (524, 153580), (560, 143707), (655, 122864), (917, 87760), (1048, 76790), (1097, 73360), (1310, 61432), (1834, 43880), (2096, 38395), (2194, 36680), (2620, 30716), (3668, 21940), (4388, 18340), (4585, 17552), (5240, 15358), (5485, 14672), (7336, 10970), (7679, 10480), (8776, 9170)]