20407555

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{251}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 29611008

約数和(自身を除く): 9203453

約数列:

[1, 5, 7, 23, 35, 101, 115, 161, 251, 505, 707, 805, 1255, 1757, 2323, 3535, 5773, 8785, 11615, 16261, 25351, 28865, 40411, 81305, 126755, 177457, 202055, 583073, 887285, 2915365, 4081511, 20407555]

約数ペア:

[(1, 20407555), (5, 4081511), (7, 2915365), (23, 887285), (35, 583073), (101, 202055), (115, 177457), (161, 126755), (251, 81305), (505, 40411), (707, 28865), (805, 25351), (1255, 16261), (1757, 11615), (2323, 8785), (3535, 5773)]