19706960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2707}}^1$

素因数の和:2740

約数の個数: 80

約数和(自身を含む): 56413056

約数和(自身を除く): 36706096

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 2707, 3640, 5414, 7280, 10828, 13535, 18949, 21656, 27070, 35191, 37898, 43312, 54140, 70382, 75796, 94745, 108280, 140764, 151592, 175955, 189490, 216560, 246337, 281528, 303184, 351910, 378980, 492674, 563056, 703820, 757960, 985348, 1231685, 1407640, 1515920, 1970696, 2463370, 2815280, 3941392, 4926740, 9853480, 19706960]

約数ペア:

[(1, 19706960), (2, 9853480), (4, 4926740), (5, 3941392), (7, 2815280), (8, 2463370), (10, 1970696), (13, 1515920), (14, 1407640), (16, 1231685), (20, 985348), (26, 757960), (28, 703820), (35, 563056), (40, 492674), (52, 378980), (56, 351910), (65, 303184), (70, 281528), (80, 246337), (91, 216560), (104, 189490), (112, 175955), (130, 151592), (140, 140764), (182, 108280), (208, 94745), (260, 75796), (280, 70382), (364, 54140), (455, 43312), (520, 37898), (560, 35191), (728, 27070), (910, 21656), (1040, 18949), (1456, 13535), (1820, 10828), (2707, 7280), (3640, 5414)]