20709780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3793}}^1$

素因数の和:3825

約数の個数: 96

約数和(自身を含む): 71387904

約数和(自身を除く): 50678124

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 60, 65, 70, 78, 84, 91, 105, 130, 140, 156, 182, 195, 210, 260, 273, 364, 390, 420, 455, 546, 780, 910, 1092, 1365, 1820, 2730, 3793, 5460, 7586, 11379, 15172, 18965, 22758, 26551, 37930, 45516, 49309, 53102, 56895, 75860, 79653, 98618, 106204, 113790, 132755, 147927, 159306, 197236, 227580, 246545, 265510, 295854, 318612, 345163, 398265, 493090, 531020, 591708, 690326, 739635, 796530, 986180, 1035489, 1380652, 1479270, 1593060, 1725815, 2070978, 2958540, 3451630, 4141956, 5177445, 6903260, 10354890, 20709780]

約数ペア:

[(1, 20709780), (2, 10354890), (3, 6903260), (4, 5177445), (5, 4141956), (6, 3451630), (7, 2958540), (10, 2070978), (12, 1725815), (13, 1593060), (14, 1479270), (15, 1380652), (20, 1035489), (21, 986180), (26, 796530), (28, 739635), (30, 690326), (35, 591708), (39, 531020), (42, 493090), (52, 398265), (60, 345163), (65, 318612), (70, 295854), (78, 265510), (84, 246545), (91, 227580), (105, 197236), (130, 159306), (140, 147927), (156, 132755), (182, 113790), (195, 106204), (210, 98618), (260, 79653), (273, 75860), (364, 56895), (390, 53102), (420, 49309), (455, 45516), (546, 37930), (780, 26551), (910, 22758), (1092, 18965), (1365, 15172), (1820, 11379), (2730, 7586), (3793, 5460)]