678977181

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{541}}^1$

素因数の和:663

約数の個数: 64

約数和(自身を含む): 1098915840

約数和(自身を除く): 419938659

約数列:

[1, 3, 9, 23, 27, 43, 47, 69, 129, 141, 207, 387, 423, 541, 621, 989, 1081, 1161, 1269, 1623, 2021, 2967, 3243, 4869, 6063, 8901, 9729, 12443, 14607, 18189, 23263, 25427, 26703, 29187, 37329, 46483, 54567, 69789, 76281, 111987, 139449, 209367, 228843, 335961, 418347, 535049, 584821, 628101, 686529, 1093361, 1255041, 1605147, 1754463, 3280083, 4815441, 5263389, 9840249, 14446323, 15790167, 25147303, 29520747, 75441909, 226325727, 678977181]

約数ペア:

[(1, 678977181), (3, 226325727), (9, 75441909), (23, 29520747), (27, 25147303), (43, 15790167), (47, 14446323), (69, 9840249), (129, 5263389), (141, 4815441), (207, 3280083), (387, 1754463), (423, 1605147), (541, 1255041), (621, 1093361), (989, 686529), (1081, 628101), (1161, 584821), (1269, 535049), (1623, 418347), (2021, 335961), (2967, 228843), (3243, 209367), (4869, 139449), (6063, 111987), (8901, 76281), (9729, 69789), (12443, 54567), (14607, 46483), (18189, 37329), (23263, 29187), (25427, 26703)]