19952800

素因数分解:

$2^5\times 5^2\times 7^2\times {\mathrm{509}}^1$

素因数の和:543

約数の個数: 108

約数和(自身を含む): 56773710

約数和(自身を除く): 36820910

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 160, 175, 196, 200, 224, 245, 280, 350, 392, 400, 490, 509, 560, 700, 784, 800, 980, 1018, 1120, 1225, 1400, 1568, 1960, 2036, 2450, 2545, 2800, 3563, 3920, 4072, 4900, 5090, 5600, 7126, 7840, 8144, 9800, 10180, 12725, 14252, 16288, 17815, 19600, 20360, 24941, 25450, 28504, 35630, 39200, 40720, 49882, 50900, 57008, 71260, 81440, 89075, 99764, 101800, 114016, 124705, 142520, 178150, 199528, 203600, 249410, 285040, 356300, 399056, 407200, 498820, 570080, 623525, 712600, 798112, 997640, 1247050, 1425200, 1995280, 2494100, 2850400, 3990560, 4988200, 9976400, 19952800]

約数ペア:

[(1, 19952800), (2, 9976400), (4, 4988200), (5, 3990560), (7, 2850400), (8, 2494100), (10, 1995280), (14, 1425200), (16, 1247050), (20, 997640), (25, 798112), (28, 712600), (32, 623525), (35, 570080), (40, 498820), (49, 407200), (50, 399056), (56, 356300), (70, 285040), (80, 249410), (98, 203600), (100, 199528), (112, 178150), (140, 142520), (160, 124705), (175, 114016), (196, 101800), (200, 99764), (224, 89075), (245, 81440), (280, 71260), (350, 57008), (392, 50900), (400, 49882), (490, 40720), (509, 39200), (560, 35630), (700, 28504), (784, 25450), (800, 24941), (980, 20360), (1018, 19600), (1120, 17815), (1225, 16288), (1400, 14252), (1568, 12725), (1960, 10180), (2036, 9800), (2450, 8144), (2545, 7840), (2800, 7126), (3563, 5600), (3920, 5090), (4072, 4900)]