18691136

素因数分解:

$2^6\times {\mathrm{19}}^2\times {\mathrm{809}}^1$

素因数の和:859

約数の個数: 42

約数和(自身を含む): 39193470

約数和(自身を除く): 20502334

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 152, 304, 361, 608, 722, 809, 1216, 1444, 1618, 2888, 3236, 5776, 6472, 11552, 12944, 15371, 23104, 25888, 30742, 51776, 61484, 122968, 245936, 292049, 491872, 584098, 983744, 1168196, 2336392, 4672784, 9345568, 18691136]

約数ペア:

[(1, 18691136), (2, 9345568), (4, 4672784), (8, 2336392), (16, 1168196), (19, 983744), (32, 584098), (38, 491872), (64, 292049), (76, 245936), (152, 122968), (304, 61484), (361, 51776), (608, 30742), (722, 25888), (809, 23104), (1216, 15371), (1444, 12944), (1618, 11552), (2888, 6472), (3236, 5776)]