21383505940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{379}}^1\times {\mathrm{39733}}^1$

素因数の和:40192

約数の個数: 48

約数和(自身を含む): 45659134080

約数和(自身を除く): 24275628140

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 379, 710, 758, 1420, 1516, 1895, 3790, 7580, 26909, 39733, 53818, 79466, 107636, 134545, 158932, 198665, 269090, 397330, 538180, 794660, 2821043, 5642086, 11284172, 14105215, 15058807, 28210430, 30117614, 56420860, 60235228, 75294035, 150588070, 301176140, 1069175297, 2138350594, 4276701188, 5345876485, 10691752970, 21383505940]

約数ペア:

[(1, 21383505940), (2, 10691752970), (4, 5345876485), (5, 4276701188), (10, 2138350594), (20, 1069175297), (71, 301176140), (142, 150588070), (284, 75294035), (355, 60235228), (379, 56420860), (710, 30117614), (758, 28210430), (1420, 15058807), (1516, 14105215), (1895, 11284172), (3790, 5642086), (7580, 2821043), (26909, 794660), (39733, 538180), (53818, 397330), (79466, 269090), (107636, 198665), (134545, 158932)]