81031020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{192931}}^1$

素因数の和:192950

約数の個数: 48

約数和(自身を含む): 259300608

約数和(自身を除く): 178269588

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 192931, 385862, 578793, 771724, 964655, 1157586, 1350517, 1929310, 2315172, 2701034, 2893965, 3858620, 4051551, 5402068, 5787930, 6752585, 8103102, 11575860, 13505170, 16206204, 20257755, 27010340, 40515510, 81031020]

約数ペア:

[(1, 81031020), (2, 40515510), (3, 27010340), (4, 20257755), (5, 16206204), (6, 13505170), (7, 11575860), (10, 8103102), (12, 6752585), (14, 5787930), (15, 5402068), (20, 4051551), (21, 3858620), (28, 2893965), (30, 2701034), (35, 2315172), (42, 1929310), (60, 1350517), (70, 1157586), (84, 964655), (105, 771724), (140, 578793), (210, 385862), (420, 192931)]