21000736476

素因数分解:

$2^2\times 3^2\times {\mathrm{67}}^1\times {\mathrm{2053}}^1\times {\mathrm{4241}}^1$

素因数の和:6371

約数の個数: 72

約数和(自身を含む): 53916464784

約数和(自身を除く): 32915728308

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 67, 134, 201, 268, 402, 603, 804, 1206, 2053, 2412, 4106, 4241, 6159, 8212, 8482, 12318, 12723, 16964, 18477, 24636, 25446, 36954, 38169, 50892, 73908, 76338, 137551, 152676, 275102, 284147, 412653, 550204, 568294, 825306, 852441, 1136588, 1237959, 1650612, 1704882, 2475918, 2557323, 3409764, 4951836, 5114646, 8706773, 10229292, 17413546, 26120319, 34827092, 52240638, 78360957, 104481276, 156721914, 313443828, 583353791, 1166707582, 1750061373, 2333415164, 3500122746, 5250184119, 7000245492, 10500368238, 21000736476]

約数ペア:

[(1, 21000736476), (2, 10500368238), (3, 7000245492), (4, 5250184119), (6, 3500122746), (9, 2333415164), (12, 1750061373), (18, 1166707582), (36, 583353791), (67, 313443828), (134, 156721914), (201, 104481276), (268, 78360957), (402, 52240638), (603, 34827092), (804, 26120319), (1206, 17413546), (2053, 10229292), (2412, 8706773), (4106, 5114646), (4241, 4951836), (6159, 3409764), (8212, 2557323), (8482, 2475918), (12318, 1704882), (12723, 1650612), (16964, 1237959), (18477, 1136588), (24636, 852441), (25446, 825306), (36954, 568294), (38169, 550204), (50892, 412653), (73908, 284147), (76338, 275102), (137551, 152676)]