20018746

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{197}}^1$

素因数の和:390

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 14195654

約数列:

[1, 2, 11, 22, 31, 62, 149, 197, 298, 341, 394, 682, 1639, 2167, 3278, 4334, 4619, 6107, 9238, 12214, 29353, 50809, 58706, 67177, 101618, 134354, 322883, 645766, 909943, 1819886, 10009373, 20018746]

約数ペア:

[(1, 20018746), (2, 10009373), (11, 1819886), (22, 909943), (31, 645766), (62, 322883), (149, 134354), (197, 101618), (298, 67177), (341, 58706), (394, 50809), (682, 29353), (1639, 12214), (2167, 9238), (3278, 6107), (4334, 4619)]