21465290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{457}}^1$

素因数の和:543

約数の個数: 64

約数和(自身を含む): 49068288

約数和(自身を除く): 27602998

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 61, 70, 77, 110, 122, 154, 305, 385, 427, 457, 610, 671, 770, 854, 914, 1342, 2135, 2285, 3199, 3355, 4270, 4570, 4697, 5027, 6398, 6710, 9394, 10054, 15995, 23485, 25135, 27877, 31990, 35189, 46970, 50270, 55754, 70378, 139385, 175945, 195139, 278770, 306647, 351890, 390278, 613294, 975695, 1533235, 1951390, 2146529, 3066470, 4293058, 10732645, 21465290]

約数ペア:

[(1, 21465290), (2, 10732645), (5, 4293058), (7, 3066470), (10, 2146529), (11, 1951390), (14, 1533235), (22, 975695), (35, 613294), (55, 390278), (61, 351890), (70, 306647), (77, 278770), (110, 195139), (122, 175945), (154, 139385), (305, 70378), (385, 55754), (427, 50270), (457, 46970), (610, 35189), (671, 31990), (770, 27877), (854, 25135), (914, 23485), (1342, 15995), (2135, 10054), (2285, 9394), (3199, 6710), (3355, 6398), (4270, 5027), (4570, 4697)]