21489568

素因数分解:

$2^5\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:281

約数の個数: 48

約数和(自身を含む): 43825320

約数和(自身を除く): 22335752

約数列:

[1, 2, 4, 8, 16, 32, 61, 101, 109, 122, 202, 218, 244, 404, 436, 488, 808, 872, 976, 1616, 1744, 1952, 3232, 3488, 6161, 6649, 11009, 12322, 13298, 22018, 24644, 26596, 44036, 49288, 53192, 88072, 98576, 106384, 176144, 197152, 212768, 352288, 671549, 1343098, 2686196, 5372392, 10744784, 21489568]

約数ペア:

[(1, 21489568), (2, 10744784), (4, 5372392), (8, 2686196), (16, 1343098), (32, 671549), (61, 352288), (101, 212768), (109, 197152), (122, 176144), (202, 106384), (218, 98576), (244, 88072), (404, 53192), (436, 49288), (488, 44036), (808, 26596), (872, 24644), (976, 22018), (1616, 13298), (1744, 12322), (1952, 11009), (3232, 6649), (3488, 6161)]