28820780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 68947200

約数和(自身を除く): 40126420

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 37, 58, 68, 74, 79, 85, 116, 145, 148, 158, 170, 185, 290, 316, 340, 370, 395, 493, 580, 629, 740, 790, 986, 1073, 1258, 1343, 1580, 1972, 2146, 2291, 2465, 2516, 2686, 2923, 3145, 4292, 4582, 4930, 5365, 5372, 5846, 6290, 6715, 9164, 9860, 10730, 11455, 11692, 12580, 13430, 14615, 18241, 21460, 22910, 26860, 29230, 36482, 38947, 45820, 49691, 58460, 72964, 77894, 84767, 91205, 99382, 155788, 169534, 182410, 194735, 198764, 248455, 339068, 364820, 389470, 423835, 496910, 778940, 847670, 993820, 1441039, 1695340, 2882078, 5764156, 7205195, 14410390, 28820780]

約数ペア:

[(1, 28820780), (2, 14410390), (4, 7205195), (5, 5764156), (10, 2882078), (17, 1695340), (20, 1441039), (29, 993820), (34, 847670), (37, 778940), (58, 496910), (68, 423835), (74, 389470), (79, 364820), (85, 339068), (116, 248455), (145, 198764), (148, 194735), (158, 182410), (170, 169534), (185, 155788), (290, 99382), (316, 91205), (340, 84767), (370, 77894), (395, 72964), (493, 58460), (580, 49691), (629, 45820), (740, 38947), (790, 36482), (986, 29230), (1073, 26860), (1258, 22910), (1343, 21460), (1580, 18241), (1972, 14615), (2146, 13430), (2291, 12580), (2465, 11692), (2516, 11455), (2686, 10730), (2923, 9860), (3145, 9164), (4292, 6715), (4582, 6290), (4930, 5846), (5365, 5372)]