209501421

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1\times {\mathrm{433}}^1$

素因数の和:685

約数の個数: 32

約数和(自身を含む): 303730560

約数和(自身を除く): 94229139

約数列:

[1, 3, 17, 51, 53, 159, 179, 433, 537, 901, 1299, 2703, 3043, 7361, 9129, 9487, 22083, 22949, 28461, 68847, 77507, 161279, 232521, 390133, 483837, 1170399, 1317619, 3952857, 4107871, 12323613, 69833807, 209501421]

約数ペア:

[(1, 209501421), (3, 69833807), (17, 12323613), (51, 4107871), (53, 3952857), (159, 1317619), (179, 1170399), (433, 483837), (537, 390133), (901, 232521), (1299, 161279), (2703, 77507), (3043, 68847), (7361, 28461), (9129, 22949), (9487, 22083)]