21285666

素因数分解:

$2^1\times 3^4\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:221

約数の個数: 80

約数和(自身を含む): 51749280

約数和(自身を除く): 30463614

約数列:

[1, 2, 3, 6, 9, 17, 18, 27, 34, 51, 54, 59, 81, 102, 118, 131, 153, 162, 177, 262, 306, 354, 393, 459, 531, 786, 918, 1003, 1062, 1179, 1377, 1593, 2006, 2227, 2358, 2754, 3009, 3186, 3537, 4454, 4779, 6018, 6681, 7074, 7729, 9027, 9558, 10611, 13362, 15458, 18054, 20043, 21222, 23187, 27081, 40086, 46374, 54162, 60129, 69561, 81243, 120258, 131393, 139122, 162486, 180387, 208683, 262786, 360774, 394179, 417366, 626049, 788358, 1182537, 1252098, 2365074, 3547611, 7095222, 10642833, 21285666]

約数ペア:

[(1, 21285666), (2, 10642833), (3, 7095222), (6, 3547611), (9, 2365074), (17, 1252098), (18, 1182537), (27, 788358), (34, 626049), (51, 417366), (54, 394179), (59, 360774), (81, 262786), (102, 208683), (118, 180387), (131, 162486), (153, 139122), (162, 131393), (177, 120258), (262, 81243), (306, 69561), (354, 60129), (393, 54162), (459, 46374), (531, 40086), (786, 27081), (918, 23187), (1003, 21222), (1062, 20043), (1179, 18054), (1377, 15458), (1593, 13362), (2006, 10611), (2227, 9558), (2358, 9027), (2754, 7729), (3009, 7074), (3186, 6681), (3537, 6018), (4454, 4779)]