20876543990

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{821}}^1\times {\mathrm{28571}}^1$

素因数の和:29488

約数の個数: 32

約数和(自身を含む): 38047618080

約数和(自身を除く): 17171074090

約数列:

[1, 2, 5, 10, 89, 178, 445, 821, 890, 1642, 4105, 8210, 28571, 57142, 73069, 142855, 146138, 285710, 365345, 730690, 2542819, 5085638, 12714095, 23456791, 25428190, 46913582, 117283955, 234567910, 2087654399, 4175308798, 10438271995, 20876543990]

約数ペア:

[(1, 20876543990), (2, 10438271995), (5, 4175308798), (10, 2087654399), (89, 234567910), (178, 117283955), (445, 46913582), (821, 25428190), (890, 23456791), (1642, 12714095), (4105, 5085638), (8210, 2542819), (28571, 730690), (57142, 365345), (73069, 285710), (142855, 146138)]