21561210

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{751}}^1$

素因数の和:804

約数の個数: 96

約数和(自身を含む): 63348480

約数和(自身を除く): 41787270

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 29, 30, 33, 45, 55, 58, 66, 87, 90, 99, 110, 145, 165, 174, 198, 261, 290, 319, 330, 435, 495, 522, 638, 751, 870, 957, 990, 1305, 1502, 1595, 1914, 2253, 2610, 2871, 3190, 3755, 4506, 4785, 5742, 6759, 7510, 8261, 9570, 11265, 13518, 14355, 16522, 21779, 22530, 24783, 28710, 33795, 41305, 43558, 49566, 65337, 67590, 74349, 82610, 108895, 123915, 130674, 148698, 196011, 217790, 239569, 247830, 326685, 371745, 392022, 479138, 653370, 718707, 743490, 980055, 1197845, 1437414, 1960110, 2156121, 2395690, 3593535, 4312242, 7187070, 10780605, 21561210]

約数ペア:

[(1, 21561210), (2, 10780605), (3, 7187070), (5, 4312242), (6, 3593535), (9, 2395690), (10, 2156121), (11, 1960110), (15, 1437414), (18, 1197845), (22, 980055), (29, 743490), (30, 718707), (33, 653370), (45, 479138), (55, 392022), (58, 371745), (66, 326685), (87, 247830), (90, 239569), (99, 217790), (110, 196011), (145, 148698), (165, 130674), (174, 123915), (198, 108895), (261, 82610), (290, 74349), (319, 67590), (330, 65337), (435, 49566), (495, 43558), (522, 41305), (638, 33795), (751, 28710), (870, 24783), (957, 22530), (990, 21779), (1305, 16522), (1502, 14355), (1595, 13518), (1914, 11265), (2253, 9570), (2610, 8261), (2871, 7510), (3190, 6759), (3755, 5742), (4506, 4785)]