20916169740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{827}}^1\times {\mathrm{1979}}^1$

素因数の和:2892

約数の個数: 144

約数和(自身を含む): 64449665280

約数和(自身を除く): 43533495540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 827, 852, 1065, 1278, 1420, 1654, 1979, 2130, 2481, 2556, 3195, 3308, 3958, 4135, 4260, 4962, 5937, 6390, 7443, 7916, 8270, 9895, 9924, 11874, 12405, 12780, 14886, 16540, 17811, 19790, 23748, 24810, 29685, 29772, 35622, 37215, 39580, 49620, 58717, 59370, 71244, 74430, 89055, 117434, 118740, 140509, 148860, 176151, 178110, 234868, 281018, 293585, 352302, 356220, 421527, 528453, 562036, 587170, 702545, 704604, 843054, 880755, 1056906, 1174340, 1264581, 1405090, 1636633, 1686108, 1761510, 2107635, 2113812, 2529162, 2642265, 2810180, 3273266, 3523020, 4215270, 4909899, 5058324, 5284530, 6322905, 6546532, 8183165, 8430540, 9819798, 10569060, 12645810, 14729697, 16366330, 19639596, 24549495, 25291620, 29459394, 32732660, 49098990, 58918788, 73648485, 98197980, 116200943, 147296970, 232401886, 294593940, 348602829, 464803772, 581004715, 697205658, 1045808487, 1162009430, 1394411316, 1743014145, 2091616974, 2324018860, 3486028290, 4183233948, 5229042435, 6972056580, 10458084870, 20916169740]

約数ペア:

[(1, 20916169740), (2, 10458084870), (3, 6972056580), (4, 5229042435), (5, 4183233948), (6, 3486028290), (9, 2324018860), (10, 2091616974), (12, 1743014145), (15, 1394411316), (18, 1162009430), (20, 1045808487), (30, 697205658), (36, 581004715), (45, 464803772), (60, 348602829), (71, 294593940), (90, 232401886), (142, 147296970), (180, 116200943), (213, 98197980), (284, 73648485), (355, 58918788), (426, 49098990), (639, 32732660), (710, 29459394), (827, 25291620), (852, 24549495), (1065, 19639596), (1278, 16366330), (1420, 14729697), (1654, 12645810), (1979, 10569060), (2130, 9819798), (2481, 8430540), (2556, 8183165), (3195, 6546532), (3308, 6322905), (3958, 5284530), (4135, 5058324), (4260, 4909899), (4962, 4215270), (5937, 3523020), (6390, 3273266), (7443, 2810180), (7916, 2642265), (8270, 2529162), (9895, 2113812), (9924, 2107635), (11874, 1761510), (12405, 1686108), (12780, 1636633), (14886, 1405090), (16540, 1264581), (17811, 1174340), (19790, 1056906), (23748, 880755), (24810, 843054), (29685, 704604), (29772, 702545), (35622, 587170), (37215, 562036), (39580, 528453), (49620, 421527), (58717, 356220), (59370, 352302), (71244, 293585), (74430, 281018), (89055, 234868), (117434, 178110), (118740, 176151), (140509, 148860)]