20651280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6619}}^1$

素因数の和:6648

約数の個数: 80

約数和(自身を含む): 68953920

約数和(自身を除く): 48302640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6619, 13238, 19857, 26476, 33095, 39714, 52952, 66190, 79428, 86047, 99285, 105904, 132380, 158856, 172094, 198570, 258141, 264760, 317712, 344188, 397140, 430235, 516282, 529520, 688376, 794280, 860470, 1032564, 1290705, 1376752, 1588560, 1720940, 2065128, 2581410, 3441880, 4130256, 5162820, 6883760, 10325640, 20651280]

約数ペア:

[(1, 20651280), (2, 10325640), (3, 6883760), (4, 5162820), (5, 4130256), (6, 3441880), (8, 2581410), (10, 2065128), (12, 1720940), (13, 1588560), (15, 1376752), (16, 1290705), (20, 1032564), (24, 860470), (26, 794280), (30, 688376), (39, 529520), (40, 516282), (48, 430235), (52, 397140), (60, 344188), (65, 317712), (78, 264760), (80, 258141), (104, 198570), (120, 172094), (130, 158856), (156, 132380), (195, 105904), (208, 99285), (240, 86047), (260, 79428), (312, 66190), (390, 52952), (520, 39714), (624, 33095), (780, 26476), (1040, 19857), (1560, 13238), (3120, 6619)]