201620298020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1\times {\mathrm{449}}^1\times {\mathrm{2917}}^1$

素因数の和:3597

約数の個数: 96

約数和(自身を含む): 436789584000

約数和(自身を除く): 235169285980

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 179, 215, 358, 430, 449, 716, 860, 895, 898, 1790, 1796, 2245, 2917, 3580, 4490, 5834, 7697, 8980, 11668, 14585, 15394, 19307, 29170, 30788, 38485, 38614, 58340, 76970, 77228, 80371, 96535, 125431, 153940, 160742, 193070, 250862, 321484, 386140, 401855, 501724, 522143, 627155, 803710, 1044286, 1254310, 1309733, 1607420, 2088572, 2508620, 2610715, 2619466, 3455953, 5221430, 5238932, 6548665, 6911906, 10442860, 13097330, 13823812, 17279765, 22452149, 26194660, 34559530, 44904298, 56318519, 69119060, 89808596, 112260745, 112637038, 224521490, 225274076, 234442207, 281592595, 449042980, 468884414, 563185190, 937768828, 1126370380, 1172211035, 2344422070, 4688844140, 10081014901, 20162029802, 40324059604, 50405074505, 100810149010, 201620298020]

約数ペア:

[(1, 201620298020), (2, 100810149010), (4, 50405074505), (5, 40324059604), (10, 20162029802), (20, 10081014901), (43, 4688844140), (86, 2344422070), (172, 1172211035), (179, 1126370380), (215, 937768828), (358, 563185190), (430, 468884414), (449, 449042980), (716, 281592595), (860, 234442207), (895, 225274076), (898, 224521490), (1790, 112637038), (1796, 112260745), (2245, 89808596), (2917, 69119060), (3580, 56318519), (4490, 44904298), (5834, 34559530), (7697, 26194660), (8980, 22452149), (11668, 17279765), (14585, 13823812), (15394, 13097330), (19307, 10442860), (29170, 6911906), (30788, 6548665), (38485, 5238932), (38614, 5221430), (58340, 3455953), (76970, 2619466), (77228, 2610715), (80371, 2508620), (96535, 2088572), (125431, 1607420), (153940, 1309733), (160742, 1254310), (193070, 1044286), (250862, 803710), (321484, 627155), (386140, 522143), (401855, 501724)]