21980376

素因数分解:

$2^3\times 3^3\times {\mathrm{11}}^2\times {\mathrm{29}}^2$

素因数の和:95

約数の個数: 144

約数和(自身を含む): 69505800

約数和(自身を除く): 47525424

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 18, 22, 24, 27, 29, 33, 36, 44, 54, 58, 66, 72, 87, 88, 99, 108, 116, 121, 132, 174, 198, 216, 232, 242, 261, 264, 297, 319, 348, 363, 396, 484, 522, 594, 638, 696, 726, 783, 792, 841, 957, 968, 1044, 1089, 1188, 1276, 1452, 1566, 1682, 1914, 2088, 2178, 2376, 2523, 2552, 2871, 2904, 3132, 3267, 3364, 3509, 3828, 4356, 5046, 5742, 6264, 6534, 6728, 7018, 7569, 7656, 8613, 8712, 9251, 10092, 10527, 11484, 13068, 14036, 15138, 17226, 18502, 20184, 21054, 22707, 22968, 26136, 27753, 28072, 30276, 31581, 34452, 37004, 42108, 45414, 55506, 60552, 63162, 68904, 74008, 83259, 84216, 90828, 94743, 101761, 111012, 126324, 166518, 181656, 189486, 203522, 222024, 249777, 252648, 305283, 333036, 378972, 407044, 499554, 610566, 666072, 757944, 814088, 915849, 999108, 1221132, 1831698, 1998216, 2442264, 2747547, 3663396, 5495094, 7326792, 10990188, 21980376]

約数ペア:

[(1, 21980376), (2, 10990188), (3, 7326792), (4, 5495094), (6, 3663396), (8, 2747547), (9, 2442264), (11, 1998216), (12, 1831698), (18, 1221132), (22, 999108), (24, 915849), (27, 814088), (29, 757944), (33, 666072), (36, 610566), (44, 499554), (54, 407044), (58, 378972), (66, 333036), (72, 305283), (87, 252648), (88, 249777), (99, 222024), (108, 203522), (116, 189486), (121, 181656), (132, 166518), (174, 126324), (198, 111012), (216, 101761), (232, 94743), (242, 90828), (261, 84216), (264, 83259), (297, 74008), (319, 68904), (348, 63162), (363, 60552), (396, 55506), (484, 45414), (522, 42108), (594, 37004), (638, 34452), (696, 31581), (726, 30276), (783, 28072), (792, 27753), (841, 26136), (957, 22968), (968, 22707), (1044, 21054), (1089, 20184), (1188, 18502), (1276, 17226), (1452, 15138), (1566, 14036), (1682, 13068), (1914, 11484), (2088, 10527), (2178, 10092), (2376, 9251), (2523, 8712), (2552, 8613), (2871, 7656), (2904, 7569), (3132, 7018), (3267, 6728), (3364, 6534), (3509, 6264), (3828, 5742), (4356, 5046)]