20679890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{251}}^1$

素因数の和:383

約数の個数: 64

約数和(自身を含む): 47029248

約数和(自身を除く): 26349358

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 107, 110, 154, 214, 251, 385, 502, 535, 749, 770, 1070, 1177, 1255, 1498, 1757, 2354, 2510, 2761, 3514, 3745, 5522, 5885, 7490, 8239, 8785, 11770, 13805, 16478, 17570, 19327, 26857, 27610, 38654, 41195, 53714, 82390, 96635, 134285, 187999, 193270, 268570, 295427, 375998, 590854, 939995, 1477135, 1879990, 2067989, 2954270, 4135978, 10339945, 20679890]

約数ペア:

[(1, 20679890), (2, 10339945), (5, 4135978), (7, 2954270), (10, 2067989), (11, 1879990), (14, 1477135), (22, 939995), (35, 590854), (55, 375998), (70, 295427), (77, 268570), (107, 193270), (110, 187999), (154, 134285), (214, 96635), (251, 82390), (385, 53714), (502, 41195), (535, 38654), (749, 27610), (770, 26857), (1070, 19327), (1177, 17570), (1255, 16478), (1498, 13805), (1757, 11770), (2354, 8785), (2510, 8239), (2761, 7490), (3514, 5885), (3745, 5522)]