21777660

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{4481}}^1$

素因数の和:4505

約数の個数: 72

約数和(自身を含む): 68520816

約数和(自身を除く): 46743156

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 4481, 4860, 8962, 13443, 17924, 22405, 26886, 40329, 44810, 53772, 67215, 80658, 89620, 120987, 134430, 161316, 201645, 241974, 268860, 362961, 403290, 483948, 604935, 725922, 806580, 1088883, 1209870, 1451844, 1814805, 2177766, 2419740, 3629610, 4355532, 5444415, 7259220, 10888830, 21777660]

約数ペア:

[(1, 21777660), (2, 10888830), (3, 7259220), (4, 5444415), (5, 4355532), (6, 3629610), (9, 2419740), (10, 2177766), (12, 1814805), (15, 1451844), (18, 1209870), (20, 1088883), (27, 806580), (30, 725922), (36, 604935), (45, 483948), (54, 403290), (60, 362961), (81, 268860), (90, 241974), (108, 201645), (135, 161316), (162, 134430), (180, 120987), (243, 89620), (270, 80658), (324, 67215), (405, 53772), (486, 44810), (540, 40329), (810, 26886), (972, 22405), (1215, 17924), (1620, 13443), (2430, 8962), (4481, 4860)]