128332520

素因数分解:

$2^3\times 5^1\times {\mathrm{691}}^1\times {\mathrm{4643}}^1$

素因数の和:5345

約数の個数: 32

約数和(自身を含む): 289228320

約数和(自身を除く): 160895800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 691, 1382, 2764, 3455, 4643, 5528, 6910, 9286, 13820, 18572, 23215, 27640, 37144, 46430, 92860, 185720, 3208313, 6416626, 12833252, 16041565, 25666504, 32083130, 64166260, 128332520]

約数ペア:

[(1, 128332520), (2, 64166260), (4, 32083130), (5, 25666504), (8, 16041565), (10, 12833252), (20, 6416626), (40, 3208313), (691, 185720), (1382, 92860), (2764, 46430), (3455, 37144), (4643, 27640), (5528, 23215), (6910, 18572), (9286, 13820)]