18240640

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2591}}^1$

素因数の和:2621

約数の個数: 64

約数和(自身を含む): 47589120

約数和(自身を除く): 29348480

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 2591, 3520, 5182, 7040, 10364, 12955, 20728, 25910, 28501, 41456, 51820, 57002, 82912, 103640, 114004, 142505, 165824, 207280, 228008, 285010, 331648, 414560, 456016, 570020, 829120, 912032, 1140040, 1658240, 1824064, 2280080, 3648128, 4560160, 9120320, 18240640]

約数ペア:

[(1, 18240640), (2, 9120320), (4, 4560160), (5, 3648128), (8, 2280080), (10, 1824064), (11, 1658240), (16, 1140040), (20, 912032), (22, 829120), (32, 570020), (40, 456016), (44, 414560), (55, 331648), (64, 285010), (80, 228008), (88, 207280), (110, 165824), (128, 142505), (160, 114004), (176, 103640), (220, 82912), (320, 57002), (352, 51820), (440, 41456), (640, 28501), (704, 25910), (880, 20728), (1408, 12955), (1760, 10364), (2591, 7040), (3520, 5182)]