20616565515

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{1279}}^1$

素因数の和:1562

約数の個数: 128

約数和(自身を含む): 41631744000

約数和(自身を除く): 21015178485

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 49, 65, 91, 105, 147, 195, 241, 245, 273, 343, 455, 637, 723, 735, 1029, 1205, 1279, 1365, 1687, 1715, 1911, 3133, 3185, 3615, 3837, 4459, 5061, 5145, 6395, 8435, 8953, 9399, 9555, 11809, 13377, 15665, 16627, 19185, 21931, 22295, 25305, 26859, 35427, 44765, 46995, 49881, 59045, 62671, 65793, 66885, 82663, 83135, 109655, 116389, 134295, 153517, 177135, 188013, 247989, 249405, 308239, 313355, 328965, 349167, 413315, 438697, 460551, 581945, 767585, 814723, 924717, 940065, 1074619, 1239945, 1316091, 1541195, 1745835, 2157673, 2193485, 2302755, 2444169, 3223857, 4007107, 4073615, 4623585, 5373095, 5703061, 6473019, 6580455, 10788365, 12021321, 12220845, 15103711, 16119285, 17109183, 20035535, 28049749, 28515305, 32365095, 45311133, 60106605, 75518555, 84149247, 85545915, 105725977, 140248745, 196348243, 226555665, 317177931, 420746235, 528629885, 589044729, 981741215, 1374437701, 1585889655, 2945223645, 4123313103, 6872188505, 20616565515]

約数ペア:

[(1, 20616565515), (3, 6872188505), (5, 4123313103), (7, 2945223645), (13, 1585889655), (15, 1374437701), (21, 981741215), (35, 589044729), (39, 528629885), (49, 420746235), (65, 317177931), (91, 226555665), (105, 196348243), (147, 140248745), (195, 105725977), (241, 85545915), (245, 84149247), (273, 75518555), (343, 60106605), (455, 45311133), (637, 32365095), (723, 28515305), (735, 28049749), (1029, 20035535), (1205, 17109183), (1279, 16119285), (1365, 15103711), (1687, 12220845), (1715, 12021321), (1911, 10788365), (3133, 6580455), (3185, 6473019), (3615, 5703061), (3837, 5373095), (4459, 4623585), (5061, 4073615), (5145, 4007107), (6395, 3223857), (8435, 2444169), (8953, 2302755), (9399, 2193485), (9555, 2157673), (11809, 1745835), (13377, 1541195), (15665, 1316091), (16627, 1239945), (19185, 1074619), (21931, 940065), (22295, 924717), (25305, 814723), (26859, 767585), (35427, 581945), (44765, 460551), (46995, 438697), (49881, 413315), (59045, 349167), (62671, 328965), (65793, 313355), (66885, 308239), (82663, 249405), (83135, 247989), (109655, 188013), (116389, 177135), (134295, 153517)]