21312216

素因数分解:

$2^3\times 3^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{173}}^1$

素因数の和:273

約数の個数: 96

約数和(自身を含む): 61074000

約数和(自身を除く): 39761784

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 29, 36, 58, 59, 72, 87, 116, 118, 173, 174, 177, 232, 236, 261, 346, 348, 354, 472, 519, 522, 531, 692, 696, 708, 1038, 1044, 1062, 1384, 1416, 1557, 1711, 2076, 2088, 2124, 3114, 3422, 4152, 4248, 5017, 5133, 6228, 6844, 10034, 10207, 10266, 12456, 13688, 15051, 15399, 20068, 20414, 20532, 30102, 30621, 30798, 40136, 40828, 41064, 45153, 60204, 61242, 61596, 81656, 90306, 91863, 120408, 122484, 123192, 180612, 183726, 244968, 296003, 361224, 367452, 592006, 734904, 888009, 1184012, 1776018, 2368024, 2664027, 3552036, 5328054, 7104072, 10656108, 21312216]

約数ペア:

[(1, 21312216), (2, 10656108), (3, 7104072), (4, 5328054), (6, 3552036), (8, 2664027), (9, 2368024), (12, 1776018), (18, 1184012), (24, 888009), (29, 734904), (36, 592006), (58, 367452), (59, 361224), (72, 296003), (87, 244968), (116, 183726), (118, 180612), (173, 123192), (174, 122484), (177, 120408), (232, 91863), (236, 90306), (261, 81656), (346, 61596), (348, 61242), (354, 60204), (472, 45153), (519, 41064), (522, 40828), (531, 40136), (692, 30798), (696, 30621), (708, 30102), (1038, 20532), (1044, 20414), (1062, 20068), (1384, 15399), (1416, 15051), (1557, 13688), (1711, 12456), (2076, 10266), (2088, 10207), (2124, 10034), (3114, 6844), (3422, 6228), (4152, 5133), (4248, 5017)]