20165739980

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{947}}^1\times {\mathrm{20089}}^1$

素因数の和:21098

約数の個数: 48

約数和(自身を含む): 43194785760

約数和(自身を除く): 23029045780

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 947, 1060, 1894, 3788, 4735, 9470, 18940, 20089, 40178, 50191, 80356, 100382, 100445, 200764, 200890, 250955, 401780, 501910, 1003820, 1064717, 2129434, 4258868, 5323585, 10647170, 19024283, 21294340, 38048566, 76097132, 95121415, 190242830, 380485660, 1008286999, 2016573998, 4033147996, 5041434995, 10082869990, 20165739980]

約数ペア:

[(1, 20165739980), (2, 10082869990), (4, 5041434995), (5, 4033147996), (10, 2016573998), (20, 1008286999), (53, 380485660), (106, 190242830), (212, 95121415), (265, 76097132), (530, 38048566), (947, 21294340), (1060, 19024283), (1894, 10647170), (3788, 5323585), (4735, 4258868), (9470, 2129434), (18940, 1064717), (20089, 1003820), (40178, 501910), (50191, 401780), (80356, 250955), (100382, 200890), (100445, 200764)]