261350040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{1291}}^1$

素因数の和:1553

約数の個数: 128

約数和(自身を含む): 900472320

約数和(自身を除く): 639122280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 241, 280, 420, 482, 723, 840, 964, 1205, 1291, 1446, 1687, 1928, 2410, 2582, 2892, 3374, 3615, 3873, 4820, 5061, 5164, 5784, 6455, 6748, 7230, 7746, 8435, 9037, 9640, 10122, 10328, 12910, 13496, 14460, 15492, 16870, 18074, 19365, 20244, 25305, 25820, 27111, 28920, 30984, 33740, 36148, 38730, 40488, 45185, 50610, 51640, 54222, 67480, 72296, 77460, 90370, 101220, 108444, 135555, 154920, 180740, 202440, 216888, 271110, 311131, 361480, 542220, 622262, 933393, 1084440, 1244524, 1555655, 1866786, 2177917, 2489048, 3111310, 3733572, 4355834, 4666965, 6222620, 6533751, 7467144, 8711668, 9333930, 10889585, 12445240, 13067502, 17423336, 18667860, 21779170, 26135004, 32668755, 37335720, 43558340, 52270008, 65337510, 87116680, 130675020, 261350040]

約数ペア:

[(1, 261350040), (2, 130675020), (3, 87116680), (4, 65337510), (5, 52270008), (6, 43558340), (7, 37335720), (8, 32668755), (10, 26135004), (12, 21779170), (14, 18667860), (15, 17423336), (20, 13067502), (21, 12445240), (24, 10889585), (28, 9333930), (30, 8711668), (35, 7467144), (40, 6533751), (42, 6222620), (56, 4666965), (60, 4355834), (70, 3733572), (84, 3111310), (105, 2489048), (120, 2177917), (140, 1866786), (168, 1555655), (210, 1244524), (241, 1084440), (280, 933393), (420, 622262), (482, 542220), (723, 361480), (840, 311131), (964, 271110), (1205, 216888), (1291, 202440), (1446, 180740), (1687, 154920), (1928, 135555), (2410, 108444), (2582, 101220), (2892, 90370), (3374, 77460), (3615, 72296), (3873, 67480), (4820, 54222), (5061, 51640), (5164, 50610), (5784, 45185), (6455, 40488), (6748, 38730), (7230, 36148), (7746, 33740), (8435, 30984), (9037, 28920), (9640, 27111), (10122, 25820), (10328, 25305), (12910, 20244), (13496, 19365), (14460, 18074), (15492, 16870)]