917889021

素因数分解:

$3^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{229}}^1$

素因数の和:459

約数の個数: 72

約数和(自身を含む): 1584999000

約数和(自身を除く): 667109979

約数列:

[1, 3, 7, 9, 21, 49, 61, 63, 147, 149, 183, 229, 427, 441, 447, 549, 687, 1043, 1281, 1341, 1603, 2061, 2989, 3129, 3843, 4809, 7301, 8967, 9089, 9387, 11221, 13969, 14427, 21903, 26901, 27267, 33663, 34121, 41907, 63623, 65709, 81801, 97783, 100989, 102363, 125721, 190869, 238847, 293349, 307089, 445361, 572607, 684481, 716541, 880047, 1336083, 1671929, 2053443, 2081381, 2149623, 4008249, 5015787, 6160329, 6244143, 14569667, 15047361, 18732429, 43709001, 101987669, 131127003, 305963007, 917889021]

約数ペア:

[(1, 917889021), (3, 305963007), (7, 131127003), (9, 101987669), (21, 43709001), (49, 18732429), (61, 15047361), (63, 14569667), (147, 6244143), (149, 6160329), (183, 5015787), (229, 4008249), (427, 2149623), (441, 2081381), (447, 2053443), (549, 1671929), (687, 1336083), (1043, 880047), (1281, 716541), (1341, 684481), (1603, 572607), (2061, 445361), (2989, 307089), (3129, 293349), (3843, 238847), (4809, 190869), (7301, 125721), (8967, 102363), (9089, 100989), (9387, 97783), (11221, 81801), (13969, 65709), (14427, 63623), (21903, 41907), (26901, 34121), (27267, 33663)]