28938780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{149}}^1$

素因数の和:260

約数の個数: 144

約数和(自身を含む): 96314400

約数和(自身を除く): 67375620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 83, 90, 117, 130, 149, 156, 166, 180, 195, 234, 249, 260, 298, 332, 390, 415, 447, 468, 498, 585, 596, 745, 747, 780, 830, 894, 996, 1079, 1170, 1245, 1341, 1490, 1494, 1660, 1788, 1937, 2158, 2235, 2340, 2490, 2682, 2980, 2988, 3237, 3735, 3874, 4316, 4470, 4980, 5364, 5395, 5811, 6474, 6705, 7470, 7748, 8940, 9685, 9711, 10790, 11622, 12367, 12948, 13410, 14940, 16185, 17433, 19370, 19422, 21580, 23244, 24734, 26820, 29055, 32370, 34866, 37101, 38740, 38844, 48555, 49468, 58110, 61835, 64740, 69732, 74202, 87165, 97110, 111303, 116220, 123670, 148404, 160771, 174330, 185505, 194220, 222606, 247340, 321542, 348660, 371010, 445212, 482313, 556515, 643084, 742020, 803855, 964626, 1113030, 1446939, 1607710, 1929252, 2226060, 2411565, 2893878, 3215420, 4823130, 5787756, 7234695, 9646260, 14469390, 28938780]

約数ペア:

[(1, 28938780), (2, 14469390), (3, 9646260), (4, 7234695), (5, 5787756), (6, 4823130), (9, 3215420), (10, 2893878), (12, 2411565), (13, 2226060), (15, 1929252), (18, 1607710), (20, 1446939), (26, 1113030), (30, 964626), (36, 803855), (39, 742020), (45, 643084), (52, 556515), (60, 482313), (65, 445212), (78, 371010), (83, 348660), (90, 321542), (117, 247340), (130, 222606), (149, 194220), (156, 185505), (166, 174330), (180, 160771), (195, 148404), (234, 123670), (249, 116220), (260, 111303), (298, 97110), (332, 87165), (390, 74202), (415, 69732), (447, 64740), (468, 61835), (498, 58110), (585, 49468), (596, 48555), (745, 38844), (747, 38740), (780, 37101), (830, 34866), (894, 32370), (996, 29055), (1079, 26820), (1170, 24734), (1245, 23244), (1341, 21580), (1490, 19422), (1494, 19370), (1660, 17433), (1788, 16185), (1937, 14940), (2158, 13410), (2235, 12948), (2340, 12367), (2490, 11622), (2682, 10790), (2980, 9711), (2988, 9685), (3237, 8940), (3735, 7748), (3874, 7470), (4316, 6705), (4470, 6474), (4980, 5811), (5364, 5395)]