56281988

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:265

約数の個数: 72

約数和(自身を含む): 121040640

約数和(自身を除く): 64758652

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 59, 62, 98, 118, 124, 157, 196, 217, 236, 314, 413, 434, 628, 826, 868, 1099, 1519, 1652, 1829, 2198, 2891, 3038, 3658, 4396, 4867, 5782, 6076, 7316, 7693, 9263, 9734, 11564, 12803, 15386, 18526, 19468, 25606, 30772, 34069, 37052, 51212, 64841, 68138, 89621, 129682, 136276, 179242, 238483, 259364, 287153, 358484, 453887, 476966, 574306, 907774, 953932, 1148612, 1815548, 2010071, 4020142, 8040284, 14070497, 28140994, 56281988]

約数ペア:

[(1, 56281988), (2, 28140994), (4, 14070497), (7, 8040284), (14, 4020142), (28, 2010071), (31, 1815548), (49, 1148612), (59, 953932), (62, 907774), (98, 574306), (118, 476966), (124, 453887), (157, 358484), (196, 287153), (217, 259364), (236, 238483), (314, 179242), (413, 136276), (434, 129682), (628, 89621), (826, 68138), (868, 64841), (1099, 51212), (1519, 37052), (1652, 34069), (1829, 30772), (2198, 25606), (2891, 19468), (3038, 18526), (3658, 15386), (4396, 12803), (4867, 11564), (5782, 9734), (6076, 9263), (7316, 7693)]