21049910

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{19}}^2$

素因数の和:83

約数の個数: 96

約数和(自身を含む): 49377600

約数和(自身を除く): 28327690

約数列:

[1, 2, 5, 7, 10, 14, 17, 19, 34, 35, 38, 49, 70, 85, 95, 98, 119, 133, 170, 190, 238, 245, 266, 323, 343, 361, 490, 595, 646, 665, 686, 722, 833, 931, 1190, 1330, 1615, 1666, 1715, 1805, 1862, 2261, 2527, 3230, 3430, 3610, 4165, 4522, 4655, 5054, 5831, 6137, 6517, 8330, 9310, 11305, 11662, 12274, 12635, 13034, 15827, 17689, 22610, 25270, 29155, 30685, 31654, 32585, 35378, 42959, 58310, 61370, 65170, 79135, 85918, 88445, 110789, 123823, 158270, 176890, 214795, 221578, 247646, 300713, 429590, 553945, 601426, 619115, 1107890, 1238230, 1503565, 2104991, 3007130, 4209982, 10524955, 21049910]

約数ペア:

[(1, 21049910), (2, 10524955), (5, 4209982), (7, 3007130), (10, 2104991), (14, 1503565), (17, 1238230), (19, 1107890), (34, 619115), (35, 601426), (38, 553945), (49, 429590), (70, 300713), (85, 247646), (95, 221578), (98, 214795), (119, 176890), (133, 158270), (170, 123823), (190, 110789), (238, 88445), (245, 85918), (266, 79135), (323, 65170), (343, 61370), (361, 58310), (490, 42959), (595, 35378), (646, 32585), (665, 31654), (686, 30685), (722, 29155), (833, 25270), (931, 22610), (1190, 17689), (1330, 15827), (1615, 13034), (1666, 12635), (1715, 12274), (1805, 11662), (1862, 11305), (2261, 9310), (2527, 8330), (3230, 6517), (3430, 6137), (3610, 5831), (4165, 5054), (4522, 4655)]