21991360

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3617}}^1$

素因数の和:3653

約数の個数: 56

約数和(自身を含む): 55138320

約数和(自身を除く): 33146960

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 608, 760, 1216, 1520, 3040, 3617, 6080, 7234, 14468, 18085, 28936, 36170, 57872, 68723, 72340, 115744, 137446, 144680, 231488, 274892, 289360, 343615, 549784, 578720, 687230, 1099568, 1157440, 1374460, 2199136, 2748920, 4398272, 5497840, 10995680, 21991360]

約数ペア:

[(1, 21991360), (2, 10995680), (4, 5497840), (5, 4398272), (8, 2748920), (10, 2199136), (16, 1374460), (19, 1157440), (20, 1099568), (32, 687230), (38, 578720), (40, 549784), (64, 343615), (76, 289360), (80, 274892), (95, 231488), (152, 144680), (160, 137446), (190, 115744), (304, 72340), (320, 68723), (380, 57872), (608, 36170), (760, 28936), (1216, 18085), (1520, 14468), (3040, 7234), (3617, 6080)]