20172089980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4647947}}^1$

素因数の和:4647994

約数の個数: 48

約数和(自身を含む): 49974736896

約数和(自身を除く): 29802646916

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4647947, 9295894, 18591788, 23239735, 32535629, 46479470, 65071258, 92958940, 130142516, 144086357, 162678145, 288172714, 325356290, 576345428, 650712580, 720431785, 1008604499, 1440863570, 2017208998, 2881727140, 4034417996, 5043022495, 10086044990, 20172089980]

約数ペア:

[(1, 20172089980), (2, 10086044990), (4, 5043022495), (5, 4034417996), (7, 2881727140), (10, 2017208998), (14, 1440863570), (20, 1008604499), (28, 720431785), (31, 650712580), (35, 576345428), (62, 325356290), (70, 288172714), (124, 162678145), (140, 144086357), (155, 130142516), (217, 92958940), (310, 65071258), (434, 46479470), (620, 32535629), (868, 23239735), (1085, 18591788), (2170, 9295894), (4340, 4647947)]