18063440

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:204

約数の個数: 80

約数和(自身を含む): 44193600

約数和(自身を除く): 26130160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 59, 80, 86, 89, 118, 172, 178, 215, 236, 295, 344, 356, 430, 445, 472, 590, 688, 712, 860, 890, 944, 1180, 1424, 1720, 1780, 2360, 2537, 3440, 3560, 3827, 4720, 5074, 5251, 7120, 7654, 10148, 10502, 12685, 15308, 19135, 20296, 21004, 25370, 26255, 30616, 38270, 40592, 42008, 50740, 52510, 61232, 76540, 84016, 101480, 105020, 153080, 202960, 210040, 225793, 306160, 420080, 451586, 903172, 1128965, 1806344, 2257930, 3612688, 4515860, 9031720, 18063440]

約数ペア:

[(1, 18063440), (2, 9031720), (4, 4515860), (5, 3612688), (8, 2257930), (10, 1806344), (16, 1128965), (20, 903172), (40, 451586), (43, 420080), (59, 306160), (80, 225793), (86, 210040), (89, 202960), (118, 153080), (172, 105020), (178, 101480), (215, 84016), (236, 76540), (295, 61232), (344, 52510), (356, 50740), (430, 42008), (445, 40592), (472, 38270), (590, 30616), (688, 26255), (712, 25370), (860, 21004), (890, 20296), (944, 19135), (1180, 15308), (1424, 12685), (1720, 10502), (1780, 10148), (2360, 7654), (2537, 7120), (3440, 5251), (3560, 5074), (3827, 4720)]