21131604

素因数分解:

$2^2\times 3^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{173}}^1$

素因数の和:231

約数の個数: 120

約数和(自身を含む): 61898760

約数和(自身を除く): 40767156

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 29, 36, 39, 52, 54, 58, 78, 81, 87, 108, 116, 117, 156, 162, 173, 174, 234, 261, 324, 346, 348, 351, 377, 468, 519, 522, 692, 702, 754, 783, 1038, 1044, 1053, 1131, 1404, 1508, 1557, 1566, 2076, 2106, 2249, 2262, 2349, 3114, 3132, 3393, 4212, 4498, 4524, 4671, 4698, 5017, 6228, 6747, 6786, 8996, 9342, 9396, 10034, 10179, 13494, 13572, 14013, 15051, 18684, 20068, 20241, 20358, 26988, 28026, 30102, 30537, 40482, 40716, 45153, 56052, 60204, 60723, 61074, 65221, 80964, 90306, 121446, 122148, 130442, 135459, 180612, 182169, 195663, 242892, 260884, 270918, 364338, 391326, 406377, 541836, 586989, 728676, 782652, 812754, 1173978, 1625508, 1760967, 2347956, 3521934, 5282901, 7043868, 10565802, 21131604]

約数ペア:

[(1, 21131604), (2, 10565802), (3, 7043868), (4, 5282901), (6, 3521934), (9, 2347956), (12, 1760967), (13, 1625508), (18, 1173978), (26, 812754), (27, 782652), (29, 728676), (36, 586989), (39, 541836), (52, 406377), (54, 391326), (58, 364338), (78, 270918), (81, 260884), (87, 242892), (108, 195663), (116, 182169), (117, 180612), (156, 135459), (162, 130442), (173, 122148), (174, 121446), (234, 90306), (261, 80964), (324, 65221), (346, 61074), (348, 60723), (351, 60204), (377, 56052), (468, 45153), (519, 40716), (522, 40482), (692, 30537), (702, 30102), (754, 28026), (783, 26988), (1038, 20358), (1044, 20241), (1053, 20068), (1131, 18684), (1404, 15051), (1508, 14013), (1557, 13572), (1566, 13494), (2076, 10179), (2106, 10034), (2249, 9396), (2262, 9342), (2349, 8996), (3114, 6786), (3132, 6747), (3393, 6228), (4212, 5017), (4498, 4698), (4524, 4671)]