636719140

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{4001}}^1$

素因数の和:4192

約数の個数: 48

約数和(自身を含む): 1368203760

約数和(自身を除く): 731484620

約数列:

[1, 2, 4, 5, 10, 20, 73, 109, 146, 218, 292, 365, 436, 545, 730, 1090, 1460, 2180, 4001, 7957, 8002, 15914, 16004, 20005, 31828, 39785, 40010, 79570, 80020, 159140, 292073, 436109, 584146, 872218, 1168292, 1460365, 1744436, 2180545, 2920730, 4361090, 5841460, 8722180, 31835957, 63671914, 127343828, 159179785, 318359570, 636719140]

約数ペア:

[(1, 636719140), (2, 318359570), (4, 159179785), (5, 127343828), (10, 63671914), (20, 31835957), (73, 8722180), (109, 5841460), (146, 4361090), (218, 2920730), (292, 2180545), (365, 1744436), (436, 1460365), (545, 1168292), (730, 872218), (1090, 584146), (1460, 436109), (2180, 292073), (4001, 159140), (7957, 80020), (8002, 79570), (15914, 40010), (16004, 39785), (20005, 31828)]