21334740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{643}}^1$

素因数の和:741

約数の個数: 96

約数和(自身を含む): 69242880

約数和(自身を除く): 47908140

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 79, 84, 105, 140, 158, 210, 237, 316, 395, 420, 474, 553, 643, 790, 948, 1106, 1185, 1286, 1580, 1659, 1929, 2212, 2370, 2572, 2765, 3215, 3318, 3858, 4501, 4740, 5530, 6430, 6636, 7716, 8295, 9002, 9645, 11060, 12860, 13503, 16590, 18004, 19290, 22505, 27006, 33180, 38580, 45010, 50797, 54012, 67515, 90020, 101594, 135030, 152391, 203188, 253985, 270060, 304782, 355579, 507970, 609564, 711158, 761955, 1015940, 1066737, 1422316, 1523910, 1777895, 2133474, 3047820, 3555790, 4266948, 5333685, 7111580, 10667370, 21334740]

約数ペア:

[(1, 21334740), (2, 10667370), (3, 7111580), (4, 5333685), (5, 4266948), (6, 3555790), (7, 3047820), (10, 2133474), (12, 1777895), (14, 1523910), (15, 1422316), (20, 1066737), (21, 1015940), (28, 761955), (30, 711158), (35, 609564), (42, 507970), (60, 355579), (70, 304782), (79, 270060), (84, 253985), (105, 203188), (140, 152391), (158, 135030), (210, 101594), (237, 90020), (316, 67515), (395, 54012), (420, 50797), (474, 45010), (553, 38580), (643, 33180), (790, 27006), (948, 22505), (1106, 19290), (1185, 18004), (1286, 16590), (1580, 13503), (1659, 12860), (1929, 11060), (2212, 9645), (2370, 9002), (2572, 8295), (2765, 7716), (3215, 6636), (3318, 6430), (3858, 5530), (4501, 4740)]