217420806981

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1597}}^1\times {\mathrm{122321}}^1$

素因数の和:123981

約数の個数: 32

約数和(自身を含む): 337773120768

約数和(自身を除く): 120352313787

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 1597, 4791, 11179, 33537, 84641, 122321, 253923, 366963, 592487, 856247, 1777461, 2568741, 6483013, 19449039, 45381091, 136143273, 195346637, 586039911, 1367426459, 4102279377, 10353371761, 31060115283, 72473602327, 217420806981]

約数ペア:

[(1, 217420806981), (3, 72473602327), (7, 31060115283), (21, 10353371761), (53, 4102279377), (159, 1367426459), (371, 586039911), (1113, 195346637), (1597, 136143273), (4791, 45381091), (11179, 19449039), (33537, 6483013), (84641, 2568741), (122321, 1777461), (253923, 856247), (366963, 592487)]