211820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:122

約数の個数: 48

約数和(自身を含む): 544320

約数和(自身を除く): 332500

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 89, 119, 140, 170, 178, 238, 340, 356, 445, 476, 595, 623, 890, 1190, 1246, 1513, 1780, 2380, 2492, 3026, 3115, 6052, 6230, 7565, 10591, 12460, 15130, 21182, 30260, 42364, 52955, 105910, 211820]

約数ペア:

[(1, 211820), (2, 105910), (4, 52955), (5, 42364), (7, 30260), (10, 21182), (14, 15130), (17, 12460), (20, 10591), (28, 7565), (34, 6230), (35, 6052), (68, 3115), (70, 3026), (85, 2492), (89, 2380), (119, 1780), (140, 1513), (170, 1246), (178, 1190), (238, 890), (340, 623), (356, 595), (445, 476)]