72478480

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{389}}^1$

素因数の和:556

約数の個数: 80

約数和(自身を含む): 180189360

約数和(自身を除く): 107710880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 137, 170, 272, 274, 340, 389, 548, 680, 685, 778, 1096, 1360, 1370, 1556, 1945, 2192, 2329, 2740, 3112, 3890, 4658, 5480, 6224, 6613, 7780, 9316, 10960, 11645, 13226, 15560, 18632, 23290, 26452, 31120, 33065, 37264, 46580, 52904, 53293, 66130, 93160, 105808, 106586, 132260, 186320, 213172, 264520, 266465, 426344, 529040, 532930, 852688, 905981, 1065860, 1811962, 2131720, 3623924, 4263440, 4529905, 7247848, 9059810, 14495696, 18119620, 36239240, 72478480]

約数ペア:

[(1, 72478480), (2, 36239240), (4, 18119620), (5, 14495696), (8, 9059810), (10, 7247848), (16, 4529905), (17, 4263440), (20, 3623924), (34, 2131720), (40, 1811962), (68, 1065860), (80, 905981), (85, 852688), (136, 532930), (137, 529040), (170, 426344), (272, 266465), (274, 264520), (340, 213172), (389, 186320), (548, 132260), (680, 106586), (685, 105808), (778, 93160), (1096, 66130), (1360, 53293), (1370, 52904), (1556, 46580), (1945, 37264), (2192, 33065), (2329, 31120), (2740, 26452), (3112, 23290), (3890, 18632), (4658, 15560), (5480, 13226), (6224, 11645), (6613, 10960), (7780, 9316)]