21255990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{797}}^1$

素因数の和:941

約数の個数: 64

約数和(自身を含む): 58834944

約数和(自身を除く): 37578954

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 127, 210, 254, 381, 635, 762, 797, 889, 1270, 1594, 1778, 1905, 2391, 2667, 3810, 3985, 4445, 4782, 5334, 5579, 7970, 8890, 11158, 11955, 13335, 16737, 23910, 26670, 27895, 33474, 55790, 83685, 101219, 167370, 202438, 303657, 506095, 607314, 708533, 1012190, 1417066, 1518285, 2125599, 3036570, 3542665, 4251198, 7085330, 10627995, 21255990]

約数ペア:

[(1, 21255990), (2, 10627995), (3, 7085330), (5, 4251198), (6, 3542665), (7, 3036570), (10, 2125599), (14, 1518285), (15, 1417066), (21, 1012190), (30, 708533), (35, 607314), (42, 506095), (70, 303657), (105, 202438), (127, 167370), (210, 101219), (254, 83685), (381, 55790), (635, 33474), (762, 27895), (797, 26670), (889, 23910), (1270, 16737), (1594, 13335), (1778, 11955), (1905, 11158), (2391, 8890), (2667, 7970), (3810, 5579), (3985, 5334), (4445, 4782)]