201661540

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{277}}^1\times {\mathrm{409}}^1$

素因数の和:784

約数の個数: 48

約数和(自身を含む): 430844400

約数和(自身を除く): 229182860

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 277, 356, 409, 445, 554, 818, 890, 1108, 1385, 1636, 1780, 2045, 2770, 4090, 5540, 8180, 24653, 36401, 49306, 72802, 98612, 113293, 123265, 145604, 182005, 226586, 246530, 364010, 453172, 493060, 566465, 728020, 1132930, 2265860, 10083077, 20166154, 40332308, 50415385, 100830770, 201661540]

約数ペア:

[(1, 201661540), (2, 100830770), (4, 50415385), (5, 40332308), (10, 20166154), (20, 10083077), (89, 2265860), (178, 1132930), (277, 728020), (356, 566465), (409, 493060), (445, 453172), (554, 364010), (818, 246530), (890, 226586), (1108, 182005), (1385, 145604), (1636, 123265), (1780, 113293), (2045, 98612), (2770, 72802), (4090, 49306), (5540, 36401), (8180, 24653)]