20754090

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:241

約数の個数: 128

約数和(自身を含む): 64512000

約数和(自身を除く): 43757910

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 79, 90, 105, 126, 135, 139, 158, 189, 210, 237, 270, 278, 315, 378, 395, 417, 474, 553, 630, 695, 711, 790, 834, 945, 973, 1106, 1185, 1251, 1390, 1422, 1659, 1890, 1946, 2085, 2133, 2370, 2502, 2765, 2919, 3318, 3555, 3753, 4170, 4266, 4865, 4977, 5530, 5838, 6255, 7110, 7506, 8295, 8757, 9730, 9954, 10665, 10981, 12510, 14595, 14931, 16590, 17514, 18765, 21330, 21962, 24885, 26271, 29190, 29862, 32943, 37530, 43785, 49770, 52542, 54905, 65886, 74655, 76867, 87570, 98829, 109810, 131355, 149310, 153734, 164715, 197658, 230601, 262710, 296487, 329430, 384335, 461202, 494145, 592974, 691803, 768670, 988290, 1153005, 1383606, 1482435, 2075409, 2306010, 2964870, 3459015, 4150818, 6918030, 10377045, 20754090]

約数ペア:

[(1, 20754090), (2, 10377045), (3, 6918030), (5, 4150818), (6, 3459015), (7, 2964870), (9, 2306010), (10, 2075409), (14, 1482435), (15, 1383606), (18, 1153005), (21, 988290), (27, 768670), (30, 691803), (35, 592974), (42, 494145), (45, 461202), (54, 384335), (63, 329430), (70, 296487), (79, 262710), (90, 230601), (105, 197658), (126, 164715), (135, 153734), (139, 149310), (158, 131355), (189, 109810), (210, 98829), (237, 87570), (270, 76867), (278, 74655), (315, 65886), (378, 54905), (395, 52542), (417, 49770), (474, 43785), (553, 37530), (630, 32943), (695, 29862), (711, 29190), (790, 26271), (834, 24885), (945, 21962), (973, 21330), (1106, 18765), (1185, 17514), (1251, 16590), (1390, 14931), (1422, 14595), (1659, 12510), (1890, 10981), (1946, 10665), (2085, 9954), (2133, 9730), (2370, 8757), (2502, 8295), (2765, 7506), (2919, 7110), (3318, 6255), (3555, 5838), (3753, 5530), (4170, 4977), (4266, 4865)]