18979395

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{283}}^1$

素因数の和:571

約数の個数: 32

約数和(自身を含む): 32389632

約数和(自身を除く): 13410237

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 263, 283, 789, 849, 1315, 1415, 3945, 4245, 4471, 4811, 13413, 14433, 22355, 24055, 67065, 72165, 74429, 223287, 372145, 1116435, 1265293, 3795879, 6326465, 18979395]

約数ペア:

[(1, 18979395), (3, 6326465), (5, 3795879), (15, 1265293), (17, 1116435), (51, 372145), (85, 223287), (255, 74429), (263, 72165), (283, 67065), (789, 24055), (849, 22355), (1315, 14433), (1415, 13413), (3945, 4811), (4245, 4471)]