20284740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{947}}^1$

素因数の和:986

約数の個数: 144

約数和(自身を含む): 74535552

約数和(自身を除く): 54250812

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 28, 30, 34, 35, 36, 42, 45, 51, 60, 63, 68, 70, 84, 85, 90, 102, 105, 119, 126, 140, 153, 170, 180, 204, 210, 238, 252, 255, 306, 315, 340, 357, 420, 476, 510, 595, 612, 630, 714, 765, 947, 1020, 1071, 1190, 1260, 1428, 1530, 1785, 1894, 2142, 2380, 2841, 3060, 3570, 3788, 4284, 4735, 5355, 5682, 6629, 7140, 8523, 9470, 10710, 11364, 13258, 14205, 16099, 17046, 18940, 19887, 21420, 26516, 28410, 32198, 33145, 34092, 39774, 42615, 48297, 56820, 59661, 64396, 66290, 79548, 80495, 85230, 96594, 99435, 112693, 119322, 132580, 144891, 160990, 170460, 193188, 198870, 225386, 238644, 241485, 289782, 298305, 321980, 338079, 397740, 450772, 482970, 563465, 579564, 596610, 676158, 724455, 965940, 1014237, 1126930, 1193220, 1352316, 1448910, 1690395, 2028474, 2253860, 2897820, 3380790, 4056948, 5071185, 6761580, 10142370, 20284740]

約数ペア:

[(1, 20284740), (2, 10142370), (3, 6761580), (4, 5071185), (5, 4056948), (6, 3380790), (7, 2897820), (9, 2253860), (10, 2028474), (12, 1690395), (14, 1448910), (15, 1352316), (17, 1193220), (18, 1126930), (20, 1014237), (21, 965940), (28, 724455), (30, 676158), (34, 596610), (35, 579564), (36, 563465), (42, 482970), (45, 450772), (51, 397740), (60, 338079), (63, 321980), (68, 298305), (70, 289782), (84, 241485), (85, 238644), (90, 225386), (102, 198870), (105, 193188), (119, 170460), (126, 160990), (140, 144891), (153, 132580), (170, 119322), (180, 112693), (204, 99435), (210, 96594), (238, 85230), (252, 80495), (255, 79548), (306, 66290), (315, 64396), (340, 59661), (357, 56820), (420, 48297), (476, 42615), (510, 39774), (595, 34092), (612, 33145), (630, 32198), (714, 28410), (765, 26516), (947, 21420), (1020, 19887), (1071, 18940), (1190, 17046), (1260, 16099), (1428, 14205), (1530, 13258), (1785, 11364), (1894, 10710), (2142, 9470), (2380, 8523), (2841, 7140), (3060, 6629), (3570, 5682), (3788, 5355), (4284, 4735)]