20867385

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:151

約数の個数: 96

約数和(自身を含む): 44323200

約数和(自身を除く): 23455815

約数列:

[1, 3, 5, 7, 11, 15, 21, 29, 33, 35, 49, 55, 77, 87, 89, 105, 145, 147, 165, 203, 231, 245, 267, 319, 385, 435, 445, 539, 609, 623, 735, 957, 979, 1015, 1155, 1335, 1421, 1595, 1617, 1869, 2233, 2581, 2695, 2937, 3045, 3115, 4263, 4361, 4785, 4895, 6699, 6853, 7105, 7743, 8085, 9345, 11165, 12905, 13083, 14685, 15631, 18067, 20559, 21315, 21805, 28391, 33495, 34265, 38715, 46893, 47971, 54201, 65415, 78155, 85173, 90335, 102795, 126469, 141955, 143913, 198737, 234465, 239855, 271005, 379407, 425865, 596211, 632345, 719565, 993685, 1391159, 1897035, 2981055, 4173477, 6955795, 20867385]

約数ペア:

[(1, 20867385), (3, 6955795), (5, 4173477), (7, 2981055), (11, 1897035), (15, 1391159), (21, 993685), (29, 719565), (33, 632345), (35, 596211), (49, 425865), (55, 379407), (77, 271005), (87, 239855), (89, 234465), (105, 198737), (145, 143913), (147, 141955), (165, 126469), (203, 102795), (231, 90335), (245, 85173), (267, 78155), (319, 65415), (385, 54201), (435, 47971), (445, 46893), (539, 38715), (609, 34265), (623, 33495), (735, 28391), (957, 21805), (979, 21315), (1015, 20559), (1155, 18067), (1335, 15631), (1421, 14685), (1595, 13083), (1617, 12905), (1869, 11165), (2233, 9345), (2581, 8085), (2695, 7743), (2937, 7105), (3045, 6853), (3115, 6699), (4263, 4895), (4361, 4785)]