81109260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:248

約数の個数: 144

約数和(自身を含む): 255921120

約数和(自身を除く): 174811860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 83, 89, 90, 122, 166, 178, 180, 183, 244, 249, 267, 305, 332, 356, 366, 415, 445, 498, 534, 549, 610, 732, 747, 801, 830, 890, 915, 996, 1068, 1098, 1220, 1245, 1335, 1494, 1602, 1660, 1780, 1830, 2196, 2490, 2670, 2745, 2988, 3204, 3660, 3735, 4005, 4980, 5063, 5340, 5429, 5490, 7387, 7470, 8010, 10126, 10858, 10980, 14774, 14940, 15189, 16020, 16287, 20252, 21716, 22161, 25315, 27145, 29548, 30378, 32574, 36935, 44322, 45567, 48861, 50630, 54290, 60756, 65148, 66483, 73870, 75945, 81435, 88644, 91134, 97722, 101260, 108580, 110805, 132966, 147740, 151890, 162870, 182268, 195444, 221610, 227835, 244305, 265932, 303780, 325740, 332415, 443220, 450607, 455670, 488610, 664830, 901214, 911340, 977220, 1329660, 1351821, 1802428, 2253035, 2703642, 4055463, 4506070, 5407284, 6759105, 8110926, 9012140, 13518210, 16221852, 20277315, 27036420, 40554630, 81109260]

約数ペア:

[(1, 81109260), (2, 40554630), (3, 27036420), (4, 20277315), (5, 16221852), (6, 13518210), (9, 9012140), (10, 8110926), (12, 6759105), (15, 5407284), (18, 4506070), (20, 4055463), (30, 2703642), (36, 2253035), (45, 1802428), (60, 1351821), (61, 1329660), (83, 977220), (89, 911340), (90, 901214), (122, 664830), (166, 488610), (178, 455670), (180, 450607), (183, 443220), (244, 332415), (249, 325740), (267, 303780), (305, 265932), (332, 244305), (356, 227835), (366, 221610), (415, 195444), (445, 182268), (498, 162870), (534, 151890), (549, 147740), (610, 132966), (732, 110805), (747, 108580), (801, 101260), (830, 97722), (890, 91134), (915, 88644), (996, 81435), (1068, 75945), (1098, 73870), (1220, 66483), (1245, 65148), (1335, 60756), (1494, 54290), (1602, 50630), (1660, 48861), (1780, 45567), (1830, 44322), (2196, 36935), (2490, 32574), (2670, 30378), (2745, 29548), (2988, 27145), (3204, 25315), (3660, 22161), (3735, 21716), (4005, 20252), (4980, 16287), (5063, 16020), (5340, 15189), (5429, 14940), (5490, 14774), (7387, 10980), (7470, 10858), (8010, 10126)]