161445880

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{563}}^1$

素因数の和:748

約数の個数: 64

約数和(自身を含む): 372781440

約数和(自身を除く): 211335560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 107, 134, 214, 268, 335, 428, 535, 536, 563, 670, 856, 1070, 1126, 1340, 2140, 2252, 2680, 2815, 4280, 4504, 5630, 7169, 11260, 14338, 22520, 28676, 35845, 37721, 57352, 60241, 71690, 75442, 120482, 143380, 150884, 188605, 240964, 286760, 301205, 301768, 377210, 481928, 602410, 754420, 1204820, 1508840, 2409640, 4036147, 8072294, 16144588, 20180735, 32289176, 40361470, 80722940, 161445880]

約数ペア:

[(1, 161445880), (2, 80722940), (4, 40361470), (5, 32289176), (8, 20180735), (10, 16144588), (20, 8072294), (40, 4036147), (67, 2409640), (107, 1508840), (134, 1204820), (214, 754420), (268, 602410), (335, 481928), (428, 377210), (535, 301768), (536, 301205), (563, 286760), (670, 240964), (856, 188605), (1070, 150884), (1126, 143380), (1340, 120482), (2140, 75442), (2252, 71690), (2680, 60241), (2815, 57352), (4280, 37721), (4504, 35845), (5630, 28676), (7169, 22520), (11260, 14338)]