21495810

素因数分解:

$2^1\times 3^1\times 5^1\times 7^3\times {\mathrm{2089}}^1$

素因数の和:2120

約数の個数: 64

約数和(自身を含む): 60192000

約数和(自身を除く): 38696190

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 98, 105, 147, 210, 245, 294, 343, 490, 686, 735, 1029, 1470, 1715, 2058, 2089, 3430, 4178, 5145, 6267, 10290, 10445, 12534, 14623, 20890, 29246, 31335, 43869, 62670, 73115, 87738, 102361, 146230, 204722, 219345, 307083, 438690, 511805, 614166, 716527, 1023610, 1433054, 1535415, 2149581, 3070830, 3582635, 4299162, 7165270, 10747905, 21495810]

約数ペア:

[(1, 21495810), (2, 10747905), (3, 7165270), (5, 4299162), (6, 3582635), (7, 3070830), (10, 2149581), (14, 1535415), (15, 1433054), (21, 1023610), (30, 716527), (35, 614166), (42, 511805), (49, 438690), (70, 307083), (98, 219345), (105, 204722), (147, 146230), (210, 102361), (245, 87738), (294, 73115), (343, 62670), (490, 43869), (686, 31335), (735, 29246), (1029, 20890), (1470, 14623), (1715, 12534), (2058, 10445), (2089, 10290), (3430, 6267), (4178, 5145)]