20121974890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28099}}^1\times {\mathrm{3769}}^1$

素因数の和:31894

約数の個数: 32

約数和(自身を含む): 38137320000

約数和(自身を除く): 18015345110

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 3769, 7538, 18845, 28099, 37690, 56198, 71611, 140495, 143222, 280990, 358055, 533881, 716110, 1067762, 2669405, 5338810, 105905131, 211810262, 529525655, 1059051310, 2012197489, 4024394978, 10060987445, 20121974890]

約数ペア:

[(1, 20121974890), (2, 10060987445), (5, 4024394978), (10, 2012197489), (19, 1059051310), (38, 529525655), (95, 211810262), (190, 105905131), (3769, 5338810), (7538, 2669405), (18845, 1067762), (28099, 716110), (37690, 533881), (56198, 358055), (71611, 280990), (140495, 143222)]