66431440

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{13613}}^1$

素因数の和:13687

約数の個数: 40

約数和(自身を含む): 156996648

約数和(自身を除く): 90565208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 13613, 27226, 54452, 68065, 108904, 136130, 217808, 272260, 544520, 830393, 1089040, 1660786, 3321572, 4151965, 6643144, 8303930, 13286288, 16607860, 33215720, 66431440]

約数ペア:

[(1, 66431440), (2, 33215720), (4, 16607860), (5, 13286288), (8, 8303930), (10, 6643144), (16, 4151965), (20, 3321572), (40, 1660786), (61, 1089040), (80, 830393), (122, 544520), (244, 272260), (305, 217808), (488, 136130), (610, 108904), (976, 68065), (1220, 54452), (2440, 27226), (4880, 13613)]