19070920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{487}}^1$

素因数の和:598

約数の個数: 64

約数和(自身を含む): 47433600

約数和(自身を除く): 28362680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 89, 110, 178, 220, 356, 440, 445, 487, 712, 890, 974, 979, 1780, 1948, 1958, 2435, 3560, 3896, 3916, 4870, 4895, 5357, 7832, 9740, 9790, 10714, 19480, 19580, 21428, 26785, 39160, 42856, 43343, 53570, 86686, 107140, 173372, 214280, 216715, 346744, 433430, 476773, 866860, 953546, 1733720, 1907092, 2383865, 3814184, 4767730, 9535460, 19070920]

約数ペア:

[(1, 19070920), (2, 9535460), (4, 4767730), (5, 3814184), (8, 2383865), (10, 1907092), (11, 1733720), (20, 953546), (22, 866860), (40, 476773), (44, 433430), (55, 346744), (88, 216715), (89, 214280), (110, 173372), (178, 107140), (220, 86686), (356, 53570), (440, 43343), (445, 42856), (487, 39160), (712, 26785), (890, 21428), (974, 19580), (979, 19480), (1780, 10714), (1948, 9790), (1958, 9740), (2435, 7832), (3560, 5357), (3896, 4895), (3916, 4870)]