21704631

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1723}}^1$

素因数の和:1775

約数の個数: 32

約数和(自身を含む): 34755840

約数和(自身を除く): 13051209

約数列:

[1, 3, 13, 17, 19, 39, 51, 57, 221, 247, 323, 663, 741, 969, 1723, 4199, 5169, 12597, 22399, 29291, 32737, 67197, 87873, 98211, 380783, 425581, 556529, 1142349, 1276743, 1669587, 7234877, 21704631]

約数ペア:

[(1, 21704631), (3, 7234877), (13, 1669587), (17, 1276743), (19, 1142349), (39, 556529), (51, 425581), (57, 380783), (221, 98211), (247, 87873), (323, 67197), (663, 32737), (741, 29291), (969, 22399), (1723, 12597), (4199, 5169)]