20711655

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{269}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 37908000

約数和(自身を除く): 17196345

約数列:

[1, 3, 5, 9, 15, 29, 45, 59, 87, 145, 177, 261, 269, 295, 435, 531, 807, 885, 1305, 1345, 1711, 2421, 2655, 4035, 5133, 7801, 8555, 12105, 15399, 15871, 23403, 25665, 39005, 47613, 70209, 76995, 79355, 117015, 142839, 238065, 351045, 460259, 714195, 1380777, 2301295, 4142331, 6903885, 20711655]

約数ペア:

[(1, 20711655), (3, 6903885), (5, 4142331), (9, 2301295), (15, 1380777), (29, 714195), (45, 460259), (59, 351045), (87, 238065), (145, 142839), (177, 117015), (261, 79355), (269, 76995), (295, 70209), (435, 47613), (531, 39005), (807, 25665), (885, 23403), (1305, 15871), (1345, 15399), (1711, 12105), (2421, 8555), (2655, 7801), (4035, 5133)]