81499348

素因数分解:

$2^2\times 7^2\times {\mathrm{163}}^1\times {\mathrm{2551}}^1$

素因数の和:2732

約数の個数: 36

約数和(自身を含む): 166992672

約数和(自身を除く): 85493324

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 163, 196, 326, 652, 1141, 2282, 2551, 4564, 5102, 7987, 10204, 15974, 17857, 31948, 35714, 71428, 124999, 249998, 415813, 499996, 831626, 1663252, 2910691, 5821382, 11642764, 20374837, 40749674, 81499348]

約数ペア:

[(1, 81499348), (2, 40749674), (4, 20374837), (7, 11642764), (14, 5821382), (28, 2910691), (49, 1663252), (98, 831626), (163, 499996), (196, 415813), (326, 249998), (652, 124999), (1141, 71428), (2282, 35714), (2551, 31948), (4564, 17857), (5102, 15974), (7987, 10204)]