19681816

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{359}}^1$

素因数の和:472

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 26974184

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 89, 154, 178, 308, 356, 359, 616, 623, 712, 718, 979, 1246, 1436, 1958, 2492, 2513, 2872, 3916, 3949, 4984, 5026, 6853, 7832, 7898, 10052, 13706, 15796, 20104, 27412, 27643, 31592, 31951, 54824, 55286, 63902, 110572, 127804, 221144, 223657, 255608, 351461, 447314, 702922, 894628, 1405844, 1789256, 2460227, 2811688, 4920454, 9840908, 19681816]

約数ペア:

[(1, 19681816), (2, 9840908), (4, 4920454), (7, 2811688), (8, 2460227), (11, 1789256), (14, 1405844), (22, 894628), (28, 702922), (44, 447314), (56, 351461), (77, 255608), (88, 223657), (89, 221144), (154, 127804), (178, 110572), (308, 63902), (356, 55286), (359, 54824), (616, 31951), (623, 31592), (712, 27643), (718, 27412), (979, 20104), (1246, 15796), (1436, 13706), (1958, 10052), (2492, 7898), (2513, 7832), (2872, 6853), (3916, 5026), (3949, 4984)]