243781993

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{251}}^1\times {\mathrm{821}}^1$

素因数の和:1105

約数の個数: 24

約数和(自身を含む): 303258816

約数和(自身を除く): 59476823

約数列:

[1, 7, 13, 91, 169, 251, 821, 1183, 1757, 3263, 5747, 10673, 22841, 42419, 74711, 138749, 206071, 296933, 971243, 1442497, 2678923, 18752461, 34825999, 243781993]

約数ペア:

[(1, 243781993), (7, 34825999), (13, 18752461), (91, 2678923), (169, 1442497), (251, 971243), (821, 296933), (1183, 206071), (1757, 138749), (3263, 74711), (5747, 42419), (10673, 22841)]