18809560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:257

約数の個数: 128

約数和(自身を含む): 54743040

約数和(自身を除く): 35933480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 31, 35, 40, 44, 55, 56, 62, 70, 77, 88, 110, 124, 140, 154, 155, 197, 217, 220, 248, 280, 308, 310, 341, 385, 394, 434, 440, 616, 620, 682, 770, 788, 868, 985, 1085, 1240, 1364, 1379, 1540, 1576, 1705, 1736, 1970, 2167, 2170, 2387, 2728, 2758, 3080, 3410, 3940, 4334, 4340, 4774, 5516, 6107, 6820, 6895, 7880, 8668, 8680, 9548, 10835, 11032, 11935, 12214, 13640, 13790, 15169, 17336, 19096, 21670, 23870, 24428, 27580, 30338, 30535, 42749, 43340, 47740, 48856, 55160, 60676, 61070, 67177, 75845, 85498, 86680, 95480, 121352, 122140, 134354, 151690, 170996, 213745, 244280, 268708, 303380, 335885, 341992, 427490, 470239, 537416, 606760, 671770, 854980, 940478, 1343540, 1709960, 1880956, 2351195, 2687080, 3761912, 4702390, 9404780, 18809560]

約数ペア:

[(1, 18809560), (2, 9404780), (4, 4702390), (5, 3761912), (7, 2687080), (8, 2351195), (10, 1880956), (11, 1709960), (14, 1343540), (20, 940478), (22, 854980), (28, 671770), (31, 606760), (35, 537416), (40, 470239), (44, 427490), (55, 341992), (56, 335885), (62, 303380), (70, 268708), (77, 244280), (88, 213745), (110, 170996), (124, 151690), (140, 134354), (154, 122140), (155, 121352), (197, 95480), (217, 86680), (220, 85498), (248, 75845), (280, 67177), (308, 61070), (310, 60676), (341, 55160), (385, 48856), (394, 47740), (434, 43340), (440, 42749), (616, 30535), (620, 30338), (682, 27580), (770, 24428), (788, 23870), (868, 21670), (985, 19096), (1085, 17336), (1240, 15169), (1364, 13790), (1379, 13640), (1540, 12214), (1576, 11935), (1705, 11032), (1736, 10835), (1970, 9548), (2167, 8680), (2170, 8668), (2387, 7880), (2728, 6895), (2758, 6820), (3080, 6107), (3410, 5516), (3940, 4774), (4334, 4340)]