21789585

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{283}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 39873600

約数和(自身を除く): 18084015

約数列:

[1, 3, 5, 9, 15, 29, 45, 59, 87, 145, 177, 261, 283, 295, 435, 531, 849, 885, 1305, 1415, 1711, 2547, 2655, 4245, 5133, 8207, 8555, 12735, 15399, 16697, 24621, 25665, 41035, 50091, 73863, 76995, 83485, 123105, 150273, 250455, 369315, 484213, 751365, 1452639, 2421065, 4357917, 7263195, 21789585]

約数ペア:

[(1, 21789585), (3, 7263195), (5, 4357917), (9, 2421065), (15, 1452639), (29, 751365), (45, 484213), (59, 369315), (87, 250455), (145, 150273), (177, 123105), (261, 83485), (283, 76995), (295, 73863), (435, 50091), (531, 41035), (849, 25665), (885, 24621), (1305, 16697), (1415, 15399), (1711, 12735), (2547, 8555), (2655, 8207), (4245, 5133)]