30992920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1559}}^1$

素因数の和:1648

約数の個数: 64

約数和(自身を含む): 80870400

約数和(自身を除く): 49877480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1559, 1988, 2485, 2840, 3118, 3976, 4970, 6236, 7795, 9940, 10913, 12472, 15590, 19880, 21826, 31180, 43652, 54565, 62360, 87304, 109130, 110689, 218260, 221378, 436520, 442756, 553445, 774823, 885512, 1106890, 1549646, 2213780, 3099292, 3874115, 4427560, 6198584, 7748230, 15496460, 30992920]

約数ペア:

[(1, 30992920), (2, 15496460), (4, 7748230), (5, 6198584), (7, 4427560), (8, 3874115), (10, 3099292), (14, 2213780), (20, 1549646), (28, 1106890), (35, 885512), (40, 774823), (56, 553445), (70, 442756), (71, 436520), (140, 221378), (142, 218260), (280, 110689), (284, 109130), (355, 87304), (497, 62360), (568, 54565), (710, 43652), (994, 31180), (1420, 21826), (1559, 19880), (1988, 15590), (2485, 12472), (2840, 10913), (3118, 9940), (3976, 7795), (4970, 6236)]