81634436

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{197}}^1\times {\mathrm{613}}^1$

素因数の和:840

約数の個数: 36

約数和(自身を含む): 155733732

約数和(自身を除く): 74099296

約数列:

[1, 2, 4, 13, 26, 52, 169, 197, 338, 394, 613, 676, 788, 1226, 2452, 2561, 5122, 7969, 10244, 15938, 31876, 33293, 66586, 103597, 120761, 133172, 207194, 241522, 414388, 483044, 1569893, 3139786, 6279572, 20408609, 40817218, 81634436]

約数ペア:

[(1, 81634436), (2, 40817218), (4, 20408609), (13, 6279572), (26, 3139786), (52, 1569893), (169, 483044), (197, 414388), (338, 241522), (394, 207194), (613, 133172), (676, 120761), (788, 103597), (1226, 66586), (2452, 33293), (2561, 31876), (5122, 15938), (7969, 10244)]