18119620

素因数分解:

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

素因数の和:552

約数の個数: 48

約数和(自身を含む): 40687920

約数和(自身を除く): 22568300

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 137, 170, 274, 340, 389, 548, 685, 778, 1370, 1556, 1945, 2329, 2740, 3890, 4658, 6613, 7780, 9316, 11645, 13226, 23290, 26452, 33065, 46580, 53293, 66130, 106586, 132260, 213172, 266465, 532930, 905981, 1065860, 1811962, 3623924, 4529905, 9059810, 18119620]

約数ペア:

[(1, 18119620), (2, 9059810), (4, 4529905), (5, 3623924), (10, 1811962), (17, 1065860), (20, 905981), (34, 532930), (68, 266465), (85, 213172), (137, 132260), (170, 106586), (274, 66130), (340, 53293), (389, 46580), (548, 33065), (685, 26452), (778, 23290), (1370, 13226), (1556, 11645), (1945, 9316), (2329, 7780), (2740, 6613), (3890, 4658)]