728595

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{257}}^1$

素因数の和:281

約数の個数: 40

約数和(自身を含む): 1498464

約数和(自身を除く): 769869

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 257, 315, 405, 567, 771, 945, 1285, 1799, 2313, 2835, 3855, 5397, 6939, 8995, 11565, 16191, 20817, 26985, 34695, 48573, 80955, 104085, 145719, 242865, 728595]

約数ペア:

[(1, 728595), (3, 242865), (5, 145719), (7, 104085), (9, 80955), (15, 48573), (21, 34695), (27, 26985), (35, 20817), (45, 16191), (63, 11565), (81, 8995), (105, 6939), (135, 5397), (189, 3855), (257, 2835), (315, 2313), (405, 1799), (567, 1285), (771, 945)]