20781500530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{439}}^1\times {\mathrm{15727}}^1$

素因数の和:16223

約数の個数: 64

約数和(自身を含む): 43847147520

約数和(自身を除く): 23065646990

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 70, 86, 215, 301, 430, 439, 602, 878, 1505, 2195, 3010, 3073, 4390, 6146, 15365, 15727, 18877, 30730, 31454, 37754, 78635, 94385, 110089, 132139, 157270, 188770, 220178, 264278, 550445, 660695, 676261, 1100890, 1321390, 1352522, 3381305, 4733827, 6762610, 6904153, 9467654, 13808306, 23669135, 34520765, 47338270, 48329071, 69041530, 96658142, 241645355, 296878579, 483290710, 593757158, 1484392895, 2078150053, 2968785790, 4156300106, 10390750265, 20781500530]

約数ペア:

[(1, 20781500530), (2, 10390750265), (5, 4156300106), (7, 2968785790), (10, 2078150053), (14, 1484392895), (35, 593757158), (43, 483290710), (70, 296878579), (86, 241645355), (215, 96658142), (301, 69041530), (430, 48329071), (439, 47338270), (602, 34520765), (878, 23669135), (1505, 13808306), (2195, 9467654), (3010, 6904153), (3073, 6762610), (4390, 4733827), (6146, 3381305), (15365, 1352522), (15727, 1321390), (18877, 1100890), (30730, 676261), (31454, 660695), (37754, 550445), (78635, 264278), (94385, 220178), (110089, 188770), (132139, 157270)]