28911305

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{2447}}^1$

素因数の和:2608

約数の個数: 16

約数和(自身を含む): 37013760

約数和(自身を除く): 8102455

約数列:

[1, 5, 17, 85, 139, 695, 2363, 2447, 11815, 12235, 41599, 207995, 340133, 1700665, 5782261, 28911305]

約数ペア:

[(1, 28911305), (5, 5782261), (17, 1700665), (85, 340133), (139, 207995), (695, 41599), (2363, 12235), (2447, 11815)]