21149470

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{709}}^1$

素因数の和:892

約数の個数: 32

約数和(自身を含む): 40384800

約数和(自身を除く): 19235330

約数列:

[1, 2, 5, 10, 19, 38, 95, 157, 190, 314, 709, 785, 1418, 1570, 2983, 3545, 5966, 7090, 13471, 14915, 26942, 29830, 67355, 111313, 134710, 222626, 556565, 1113130, 2114947, 4229894, 10574735, 21149470]

約数ペア:

[(1, 21149470), (2, 10574735), (5, 4229894), (10, 2114947), (19, 1113130), (38, 556565), (95, 222626), (157, 134710), (190, 111313), (314, 67355), (709, 29830), (785, 26942), (1418, 14915), (1570, 13471), (2983, 7090), (3545, 5966)]