210178840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{1373}}^1$

素因数の和:1516

約数の個数: 64

約数和(自身を含む): 489693600

約数和(自身を除く): 279514760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 89, 172, 178, 215, 344, 356, 430, 445, 712, 860, 890, 1373, 1720, 1780, 2746, 3560, 3827, 5492, 6865, 7654, 10984, 13730, 15308, 19135, 27460, 30616, 38270, 54920, 59039, 76540, 118078, 122197, 153080, 236156, 244394, 295195, 472312, 488788, 590390, 610985, 977576, 1180780, 1221970, 2361560, 2443940, 4887880, 5254471, 10508942, 21017884, 26272355, 42035768, 52544710, 105089420, 210178840]

約数ペア:

[(1, 210178840), (2, 105089420), (4, 52544710), (5, 42035768), (8, 26272355), (10, 21017884), (20, 10508942), (40, 5254471), (43, 4887880), (86, 2443940), (89, 2361560), (172, 1221970), (178, 1180780), (215, 977576), (344, 610985), (356, 590390), (430, 488788), (445, 472312), (712, 295195), (860, 244394), (890, 236156), (1373, 153080), (1720, 122197), (1780, 118078), (2746, 76540), (3560, 59039), (3827, 54920), (5492, 38270), (6865, 30616), (7654, 27460), (10984, 19135), (13730, 15308)]