61684140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{20981}}^1$

素因数の和:21007

約数の個数: 72

約数和(自身を含む): 200923632

約数和(自身を除く): 139239492

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 20981, 41962, 62943, 83924, 104905, 125886, 146867, 209810, 251772, 293734, 314715, 419620, 440601, 587468, 629430, 734335, 881202, 1028069, 1258860, 1468670, 1762404, 2056138, 2203005, 2937340, 3084207, 4112276, 4406010, 5140345, 6168414, 8812020, 10280690, 12336828, 15421035, 20561380, 30842070, 61684140]

約数ペア:

[(1, 61684140), (2, 30842070), (3, 20561380), (4, 15421035), (5, 12336828), (6, 10280690), (7, 8812020), (10, 6168414), (12, 5140345), (14, 4406010), (15, 4112276), (20, 3084207), (21, 2937340), (28, 2203005), (30, 2056138), (35, 1762404), (42, 1468670), (49, 1258860), (60, 1028069), (70, 881202), (84, 734335), (98, 629430), (105, 587468), (140, 440601), (147, 419620), (196, 314715), (210, 293734), (245, 251772), (294, 209810), (420, 146867), (490, 125886), (588, 104905), (735, 83924), (980, 62943), (1470, 41962), (2940, 20981)]