215684637

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{2243}}^1$

素因数の和:2513

約数の個数: 32

約数和(自身を含む): 347550720

約数和(自身を除く): 131866083

約数列:

[1, 3, 7, 19, 21, 57, 133, 241, 399, 723, 1687, 2243, 4579, 5061, 6729, 13737, 15701, 32053, 42617, 47103, 96159, 127851, 298319, 540563, 894957, 1621689, 3783941, 10270697, 11351823, 30812091, 71894879, 215684637]

約数ペア:

[(1, 215684637), (3, 71894879), (7, 30812091), (19, 11351823), (21, 10270697), (57, 3783941), (133, 1621689), (241, 894957), (399, 540563), (723, 298319), (1687, 127851), (2243, 96159), (4579, 47103), (5061, 42617), (6729, 32053), (13737, 15701)]