20635485

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 38320128

約数和(自身を除く): 17684643

約数列:

[1, 3, 5, 13, 15, 23, 39, 43, 65, 69, 107, 115, 129, 195, 215, 299, 321, 345, 535, 559, 645, 897, 989, 1391, 1495, 1605, 1677, 2461, 2795, 2967, 4173, 4485, 4601, 4945, 6955, 7383, 8385, 12305, 12857, 13803, 14835, 20865, 23005, 31993, 36915, 38571, 59813, 64285, 69015, 95979, 105823, 159965, 179439, 192855, 299065, 317469, 479895, 529115, 897195, 1375699, 1587345, 4127097, 6878495, 20635485]

約数ペア:

[(1, 20635485), (3, 6878495), (5, 4127097), (13, 1587345), (15, 1375699), (23, 897195), (39, 529115), (43, 479895), (65, 317469), (69, 299065), (107, 192855), (115, 179439), (129, 159965), (195, 105823), (215, 95979), (299, 69015), (321, 64285), (345, 59813), (535, 38571), (559, 36915), (645, 31993), (897, 23005), (989, 20865), (1391, 14835), (1495, 13803), (1605, 12857), (1677, 12305), (2461, 8385), (2795, 7383), (2967, 6955), (4173, 4945), (4485, 4601)]