20782305

素因数分解:

$3^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{599}}^1$

素因数の和:870

約数の個数: 32

約数和(自身を含む): 37152000

約数和(自身を除く): 16369695

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 257, 599, 771, 1285, 1797, 2313, 2995, 3855, 5391, 6939, 8985, 11565, 16173, 26955, 34695, 80865, 153943, 461829, 769715, 1385487, 2309145, 4156461, 6927435, 20782305]

約数ペア:

[(1, 20782305), (3, 6927435), (5, 4156461), (9, 2309145), (15, 1385487), (27, 769715), (45, 461829), (135, 153943), (257, 80865), (599, 34695), (771, 26955), (1285, 16173), (1797, 11565), (2313, 8985), (2995, 6939), (3855, 5391)]