21748020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{977}}^1$

素因数の和:1049

約数の個数: 96

約数和(自身を含む): 70979328

約数和(自身を除く): 49231308

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 53, 60, 70, 84, 105, 106, 140, 159, 210, 212, 265, 318, 371, 420, 530, 636, 742, 795, 977, 1060, 1113, 1484, 1590, 1855, 1954, 2226, 2931, 3180, 3710, 3908, 4452, 4885, 5565, 5862, 6839, 7420, 9770, 11130, 11724, 13678, 14655, 19540, 20517, 22260, 27356, 29310, 34195, 41034, 51781, 58620, 68390, 82068, 102585, 103562, 136780, 155343, 205170, 207124, 258905, 310686, 362467, 410340, 517810, 621372, 724934, 776715, 1035620, 1087401, 1449868, 1553430, 1812335, 2174802, 3106860, 3624670, 4349604, 5437005, 7249340, 10874010, 21748020]

約数ペア:

[(1, 21748020), (2, 10874010), (3, 7249340), (4, 5437005), (5, 4349604), (6, 3624670), (7, 3106860), (10, 2174802), (12, 1812335), (14, 1553430), (15, 1449868), (20, 1087401), (21, 1035620), (28, 776715), (30, 724934), (35, 621372), (42, 517810), (53, 410340), (60, 362467), (70, 310686), (84, 258905), (105, 207124), (106, 205170), (140, 155343), (159, 136780), (210, 103562), (212, 102585), (265, 82068), (318, 68390), (371, 58620), (420, 51781), (530, 41034), (636, 34195), (742, 29310), (795, 27356), (977, 22260), (1060, 20517), (1113, 19540), (1484, 14655), (1590, 13678), (1855, 11724), (1954, 11130), (2226, 9770), (2931, 7420), (3180, 6839), (3710, 5862), (3908, 5565), (4452, 4885)]