18814180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{643}}^1$

素因数の和:689

約数の個数: 96

約数和(自身を含む): 51932160

約数和(自身を除く): 33117980

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 28, 35, 38, 44, 55, 70, 76, 77, 95, 110, 133, 140, 154, 190, 209, 220, 266, 308, 380, 385, 418, 532, 643, 665, 770, 836, 1045, 1286, 1330, 1463, 1540, 2090, 2572, 2660, 2926, 3215, 4180, 4501, 5852, 6430, 7073, 7315, 9002, 12217, 12860, 14146, 14630, 18004, 22505, 24434, 28292, 29260, 35365, 45010, 48868, 49511, 61085, 70730, 85519, 90020, 99022, 122170, 134387, 141460, 171038, 198044, 244340, 247555, 268774, 342076, 427595, 495110, 537548, 671935, 855190, 940709, 990220, 1343870, 1710380, 1881418, 2687740, 3762836, 4703545, 9407090, 18814180]

約数ペア:

[(1, 18814180), (2, 9407090), (4, 4703545), (5, 3762836), (7, 2687740), (10, 1881418), (11, 1710380), (14, 1343870), (19, 990220), (20, 940709), (22, 855190), (28, 671935), (35, 537548), (38, 495110), (44, 427595), (55, 342076), (70, 268774), (76, 247555), (77, 244340), (95, 198044), (110, 171038), (133, 141460), (140, 134387), (154, 122170), (190, 99022), (209, 90020), (220, 85519), (266, 70730), (308, 61085), (380, 49511), (385, 48868), (418, 45010), (532, 35365), (643, 29260), (665, 28292), (770, 24434), (836, 22505), (1045, 18004), (1286, 14630), (1330, 14146), (1463, 12860), (1540, 12217), (2090, 9002), (2572, 7315), (2660, 7073), (2926, 6430), (3215, 5852), (4180, 4501)]