18544840

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2953}}^1$

素因数の和:3121

約数の個数: 32

約数和(自身を含む): 42005880

約数和(自身を除く): 23461040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 2953, 3140, 5906, 6280, 11812, 14765, 23624, 29530, 59060, 118120, 463621, 927242, 1854484, 2318105, 3708968, 4636210, 9272420, 18544840]

約数ペア:

[(1, 18544840), (2, 9272420), (4, 4636210), (5, 3708968), (8, 2318105), (10, 1854484), (20, 927242), (40, 463621), (157, 118120), (314, 59060), (628, 29530), (785, 23624), (1256, 14765), (1570, 11812), (2953, 6280), (3140, 5906)]