199895913

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{457}}^1$

素因数の和:654

約数の個数: 48

約数和(自身を含む): 339520896

約数和(自身を除く): 139624983

約数列:

[1, 3, 7, 9, 21, 53, 63, 131, 159, 371, 393, 457, 477, 917, 1113, 1179, 1371, 2751, 3199, 3339, 4113, 6943, 8253, 9597, 20829, 24221, 28791, 48601, 59867, 62487, 72663, 145803, 169547, 179601, 217989, 419069, 437409, 508641, 538803, 1257207, 1525923, 3172951, 3771621, 9518853, 22210657, 28556559, 66631971, 199895913]

約数ペア:

[(1, 199895913), (3, 66631971), (7, 28556559), (9, 22210657), (21, 9518853), (53, 3771621), (63, 3172951), (131, 1525923), (159, 1257207), (371, 538803), (393, 508641), (457, 437409), (477, 419069), (917, 217989), (1113, 179601), (1179, 169547), (1371, 145803), (2751, 72663), (3199, 62487), (3339, 59867), (4113, 48601), (6943, 28791), (8253, 24221), (9597, 20829)]