218535515

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1\times {\mathrm{293}}^1$

素因数の和:571

約数の個数: 32

約数和(自身を含む): 292626432

約数和(自身を除く): 74090917

約数列:

[1, 5, 11, 55, 71, 191, 293, 355, 781, 955, 1465, 2101, 3223, 3905, 10505, 13561, 16115, 20803, 55963, 67805, 104015, 149171, 228833, 279815, 615593, 745855, 1144165, 3077965, 3973373, 19866865, 43707103, 218535515]

約数ペア:

[(1, 218535515), (5, 43707103), (11, 19866865), (55, 3973373), (71, 3077965), (191, 1144165), (293, 745855), (355, 615593), (781, 279815), (955, 228833), (1465, 149171), (2101, 104015), (3223, 67805), (3905, 55963), (10505, 20803), (13561, 16115)]