19686590

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{691}}^1$

素因数の和:753

約数の個数: 64

約数和(自身を含む): 45439488

約数和(自身を除く): 25752898

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 37, 55, 70, 74, 77, 110, 154, 185, 259, 370, 385, 407, 518, 691, 770, 814, 1295, 1382, 2035, 2590, 2849, 3455, 4070, 4837, 5698, 6910, 7601, 9674, 14245, 15202, 24185, 25567, 28490, 38005, 48370, 51134, 53207, 76010, 106414, 127835, 178969, 255670, 266035, 281237, 357938, 532070, 562474, 894845, 1406185, 1789690, 1968659, 2812370, 3937318, 9843295, 19686590]

約数ペア:

[(1, 19686590), (2, 9843295), (5, 3937318), (7, 2812370), (10, 1968659), (11, 1789690), (14, 1406185), (22, 894845), (35, 562474), (37, 532070), (55, 357938), (70, 281237), (74, 266035), (77, 255670), (110, 178969), (154, 127835), (185, 106414), (259, 76010), (370, 53207), (385, 51134), (407, 48370), (518, 38005), (691, 28490), (770, 25567), (814, 24185), (1295, 15202), (1382, 14245), (2035, 9674), (2590, 7601), (2849, 6910), (3455, 5698), (4070, 4837)]