68891420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{1031}}^1$

素因数の和:1310

約数の個数: 48

約数和(自身を含む): 156558528

約数和(自身を除く): 87667108

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 257, 260, 514, 1028, 1031, 1285, 2062, 2570, 3341, 4124, 5140, 5155, 6682, 10310, 13364, 13403, 16705, 20620, 26806, 33410, 53612, 66820, 67015, 134030, 264967, 268060, 529934, 1059868, 1324835, 2649670, 3444571, 5299340, 6889142, 13778284, 17222855, 34445710, 68891420]

約数ペア:

[(1, 68891420), (2, 34445710), (4, 17222855), (5, 13778284), (10, 6889142), (13, 5299340), (20, 3444571), (26, 2649670), (52, 1324835), (65, 1059868), (130, 529934), (257, 268060), (260, 264967), (514, 134030), (1028, 67015), (1031, 66820), (1285, 53612), (2062, 33410), (2570, 26806), (3341, 20620), (4124, 16705), (5140, 13403), (5155, 13364), (6682, 10310)]