20297340

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:292

約数の個数: 144

約数和(自身を含む): 71547840

約数和(自身を除く): 51250500

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 89, 90, 105, 126, 140, 178, 180, 181, 210, 252, 267, 315, 356, 362, 420, 445, 534, 543, 623, 630, 724, 801, 890, 905, 1068, 1086, 1246, 1260, 1267, 1335, 1602, 1629, 1780, 1810, 1869, 2172, 2492, 2534, 2670, 2715, 3115, 3204, 3258, 3620, 3738, 3801, 4005, 5068, 5340, 5430, 5607, 6230, 6335, 6516, 7476, 7602, 8010, 8145, 9345, 10860, 11214, 11403, 12460, 12670, 15204, 16020, 16109, 16290, 18690, 19005, 22428, 22806, 25340, 28035, 32218, 32580, 37380, 38010, 45612, 48327, 56070, 57015, 64436, 76020, 80545, 96654, 112140, 112763, 114030, 144981, 161090, 193308, 225526, 228060, 241635, 289962, 322180, 338289, 451052, 483270, 563815, 579924, 676578, 724905, 966540, 1014867, 1127630, 1353156, 1449810, 1691445, 2029734, 2255260, 2899620, 3382890, 4059468, 5074335, 6765780, 10148670, 20297340]

約数ペア:

[(1, 20297340), (2, 10148670), (3, 6765780), (4, 5074335), (5, 4059468), (6, 3382890), (7, 2899620), (9, 2255260), (10, 2029734), (12, 1691445), (14, 1449810), (15, 1353156), (18, 1127630), (20, 1014867), (21, 966540), (28, 724905), (30, 676578), (35, 579924), (36, 563815), (42, 483270), (45, 451052), (60, 338289), (63, 322180), (70, 289962), (84, 241635), (89, 228060), (90, 225526), (105, 193308), (126, 161090), (140, 144981), (178, 114030), (180, 112763), (181, 112140), (210, 96654), (252, 80545), (267, 76020), (315, 64436), (356, 57015), (362, 56070), (420, 48327), (445, 45612), (534, 38010), (543, 37380), (623, 32580), (630, 32218), (724, 28035), (801, 25340), (890, 22806), (905, 22428), (1068, 19005), (1086, 18690), (1246, 16290), (1260, 16109), (1267, 16020), (1335, 15204), (1602, 12670), (1629, 12460), (1780, 11403), (1810, 11214), (1869, 10860), (2172, 9345), (2492, 8145), (2534, 8010), (2670, 7602), (2715, 7476), (3115, 6516), (3204, 6335), (3258, 6230), (3620, 5607), (3738, 5430), (3801, 5340), (4005, 5068)]