21690480

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12911}}^1$

素因数の和:12934

約数の個数: 80

約数和(自身を含む): 76852224

約数和(自身を除く): 55161744

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12911, 25822, 38733, 51644, 64555, 77466, 90377, 103288, 129110, 154932, 180754, 193665, 206576, 258220, 271131, 309864, 361508, 387330, 451885, 516440, 542262, 619728, 723016, 774660, 903770, 1032880, 1084524, 1355655, 1446032, 1549320, 1807540, 2169048, 2711310, 3098640, 3615080, 4338096, 5422620, 7230160, 10845240, 21690480]

約数ペア:

[(1, 21690480), (2, 10845240), (3, 7230160), (4, 5422620), (5, 4338096), (6, 3615080), (7, 3098640), (8, 2711310), (10, 2169048), (12, 1807540), (14, 1549320), (15, 1446032), (16, 1355655), (20, 1084524), (21, 1032880), (24, 903770), (28, 774660), (30, 723016), (35, 619728), (40, 542262), (42, 516440), (48, 451885), (56, 387330), (60, 361508), (70, 309864), (80, 271131), (84, 258220), (105, 206576), (112, 193665), (120, 180754), (140, 154932), (168, 129110), (210, 103288), (240, 90377), (280, 77466), (336, 64555), (420, 51644), (560, 38733), (840, 25822), (1680, 12911)]