19021996

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:159

約数の個数: 72

約数和(自身を含む): 41361936

約数和(自身を除く): 22339940

約数列:

[1, 2, 4, 7, 14, 28, 37, 43, 49, 61, 74, 86, 98, 122, 148, 172, 196, 244, 259, 301, 427, 518, 602, 854, 1036, 1204, 1591, 1708, 1813, 2107, 2257, 2623, 2989, 3182, 3626, 4214, 4514, 5246, 5978, 6364, 7252, 8428, 9028, 10492, 11137, 11956, 15799, 18361, 22274, 31598, 36722, 44548, 63196, 73444, 77959, 97051, 110593, 128527, 155918, 194102, 221186, 257054, 311836, 388204, 442372, 514108, 679357, 1358714, 2717428, 4755499, 9510998, 19021996]

約数ペア:

[(1, 19021996), (2, 9510998), (4, 4755499), (7, 2717428), (14, 1358714), (28, 679357), (37, 514108), (43, 442372), (49, 388204), (61, 311836), (74, 257054), (86, 221186), (98, 194102), (122, 155918), (148, 128527), (172, 110593), (196, 97051), (244, 77959), (259, 73444), (301, 63196), (427, 44548), (518, 36722), (602, 31598), (854, 22274), (1036, 18361), (1204, 15799), (1591, 11956), (1708, 11137), (1813, 10492), (2107, 9028), (2257, 8428), (2623, 7252), (2989, 6364), (3182, 5978), (3626, 5246), (4214, 4514)]