21361400

素因数分解:

$2^3\times 5^2\times {\mathrm{29}}^2\times {\mathrm{127}}^1$

素因数の和:201

約数の個数: 72

約数和(自身を含む): 51841920

約数和(自身を除く): 30480520

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 29, 40, 50, 58, 100, 116, 127, 145, 200, 232, 254, 290, 508, 580, 635, 725, 841, 1016, 1160, 1270, 1450, 1682, 2540, 2900, 3175, 3364, 3683, 4205, 5080, 5800, 6350, 6728, 7366, 8410, 12700, 14732, 16820, 18415, 21025, 25400, 29464, 33640, 36830, 42050, 73660, 84100, 92075, 106807, 147320, 168200, 184150, 213614, 368300, 427228, 534035, 736600, 854456, 1068070, 2136140, 2670175, 4272280, 5340350, 10680700, 21361400]

約数ペア:

[(1, 21361400), (2, 10680700), (4, 5340350), (5, 4272280), (8, 2670175), (10, 2136140), (20, 1068070), (25, 854456), (29, 736600), (40, 534035), (50, 427228), (58, 368300), (100, 213614), (116, 184150), (127, 168200), (145, 147320), (200, 106807), (232, 92075), (254, 84100), (290, 73660), (508, 42050), (580, 36830), (635, 33640), (725, 29464), (841, 25400), (1016, 21025), (1160, 18415), (1270, 16820), (1450, 14732), (1682, 12700), (2540, 8410), (2900, 7366), (3175, 6728), (3364, 6350), (3683, 5800), (4205, 5080)]