28019970

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:149

約数の個数: 144

約数和(自身を含む): 83655936

約数和(自身を除く): 55635966

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 31, 33, 45, 55, 62, 66, 83, 90, 93, 99, 110, 121, 155, 165, 166, 186, 198, 242, 249, 279, 310, 330, 341, 363, 415, 465, 495, 498, 558, 605, 682, 726, 747, 830, 913, 930, 990, 1023, 1089, 1210, 1245, 1395, 1494, 1705, 1815, 1826, 2046, 2178, 2490, 2573, 2739, 2790, 3069, 3410, 3630, 3735, 3751, 4565, 5115, 5146, 5445, 5478, 6138, 7470, 7502, 7719, 8217, 9130, 10043, 10230, 10890, 11253, 12865, 13695, 15345, 15438, 16434, 18755, 20086, 22506, 23157, 25730, 27390, 28303, 30129, 30690, 33759, 37510, 38595, 41085, 46314, 50215, 56265, 56606, 60258, 67518, 77190, 82170, 84909, 90387, 100430, 112530, 115785, 141515, 150645, 168795, 169818, 180774, 231570, 254727, 283030, 301290, 311333, 337590, 424545, 451935, 509454, 622666, 849090, 903870, 933999, 1273635, 1556665, 1867998, 2547270, 2801997, 3113330, 4669995, 5603994, 9339990, 14009985, 28019970]

約数ペア:

[(1, 28019970), (2, 14009985), (3, 9339990), (5, 5603994), (6, 4669995), (9, 3113330), (10, 2801997), (11, 2547270), (15, 1867998), (18, 1556665), (22, 1273635), (30, 933999), (31, 903870), (33, 849090), (45, 622666), (55, 509454), (62, 451935), (66, 424545), (83, 337590), (90, 311333), (93, 301290), (99, 283030), (110, 254727), (121, 231570), (155, 180774), (165, 169818), (166, 168795), (186, 150645), (198, 141515), (242, 115785), (249, 112530), (279, 100430), (310, 90387), (330, 84909), (341, 82170), (363, 77190), (415, 67518), (465, 60258), (495, 56606), (498, 56265), (558, 50215), (605, 46314), (682, 41085), (726, 38595), (747, 37510), (830, 33759), (913, 30690), (930, 30129), (990, 28303), (1023, 27390), (1089, 25730), (1210, 23157), (1245, 22506), (1395, 20086), (1494, 18755), (1705, 16434), (1815, 15438), (1826, 15345), (2046, 13695), (2178, 12865), (2490, 11253), (2573, 10890), (2739, 10230), (2790, 10043), (3069, 9130), (3410, 8217), (3630, 7719), (3735, 7502), (3751, 7470), (4565, 6138), (5115, 5478), (5146, 5445)]