20113520

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{733}}^1$

素因数の和:767

約数の個数: 80

約数和(自身を含む): 54609600

約数和(自身を除く): 34496080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 733, 784, 980, 1372, 1466, 1715, 1960, 2744, 2932, 3430, 3665, 3920, 5131, 5488, 5864, 6860, 7330, 10262, 11728, 13720, 14660, 20524, 25655, 27440, 29320, 35917, 41048, 51310, 58640, 71834, 82096, 102620, 143668, 179585, 205240, 251419, 287336, 359170, 410480, 502838, 574672, 718340, 1005676, 1257095, 1436680, 2011352, 2514190, 2873360, 4022704, 5028380, 10056760, 20113520]

約数ペア:

[(1, 20113520), (2, 10056760), (4, 5028380), (5, 4022704), (7, 2873360), (8, 2514190), (10, 2011352), (14, 1436680), (16, 1257095), (20, 1005676), (28, 718340), (35, 574672), (40, 502838), (49, 410480), (56, 359170), (70, 287336), (80, 251419), (98, 205240), (112, 179585), (140, 143668), (196, 102620), (245, 82096), (280, 71834), (343, 58640), (392, 51310), (490, 41048), (560, 35917), (686, 29320), (733, 27440), (784, 25655), (980, 20524), (1372, 14660), (1466, 13720), (1715, 11728), (1960, 10262), (2744, 7330), (2932, 6860), (3430, 5864), (3665, 5488), (3920, 5131)]