20406184.000000000

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^3\times {\mathrm{127}}^1$

素因数の和:186

約数の個数: 160

約数和(自身を含む): 453304320

約数和(自身を除く): 297053680

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 127, 130, 140, 169, 182, 208, 254, 260, 280, 338, 364, 455, 508, 520, 560, 635, 676, 728, 845, 889, 910, 1016, 1040, 1183, 1270, 1352, 1456, 1651, 1690, 1778, 1820, 2032, 2197, 2366, 2540, 2704, 3302, 3380, 3556, 3640, 4394, 4445, 4732, 5080, 5915, 6604, 6760, 7112, 7280, 8255, 8788, 8890, 9464, 10160, 10985, 11557, 11830, 13208, 13520, 14224, 15379, 16510, 17576, 17780, 18928, 21463, 21970, 23114, 23660, 26416, 30758, 33020, 35152, 35560, 42926, 43940, 46228, 47320, 57785, 61516, 66040, 71120, 76895, 85852, 87880, 92456, 94640, 107315, 115570, 123032, 132080, 150241, 153790, 171704, 175760, 184912, 214630, 231140, 246064, 279019, 300482, 307580, 343408, 429260, 462280, 558038, 600964, 615160, 751205, 858520, 924560, 1116076, 1201928, 1230320, 1395095, 1502410, 1717040, 1953133, 2232152, 2403856, 2790190, 3004820, 3906266, 4464304, 5580380, 6009640, 7812532, 9765665, 11160760, 12019280, 15625064, 19531330, 22321520, 31250128, 39062660, 78125320, 156250640]

約数ペア:

[(1, 156250640), (2, 78125320), (4, 39062660), (5, 31250128), (7, 22321520), (8, 19531330), (10, 15625064), (13, 12019280), (14, 11160760), (16, 9765665), (20, 7812532), (26, 6009640), (28, 5580380), (35, 4464304), (40, 3906266), (52, 3004820), (56, 2790190), (65, 2403856), (70, 2232152), (80, 1953133), (91, 1717040), (104, 1502410), (112, 1395095), (127, 1230320), (130, 1201928), (140, 1116076), (169, 924560), (182, 858520), (208, 751205), (254, 615160), (260, 600964), (280, 558038), (338, 462280), (364, 429260), (455, 343408), (508, 307580), (520, 300482), (560, 279019), (635, 246064), (676, 231140), (728, 214630), (845, 184912), (889, 175760), (910, 171704), (1016, 153790), (1040, 150241), (1183, 132080), (1270, 123032), (1352, 115570), (1456, 107315), (1651, 94640), (1690, 92456), (1778, 87880), (1820, 85852), (2032, 76895), (2197, 71120), (2366, 66040), (2540, 61516), (2704, 57785), (3302, 47320), (3380, 46228), (3556, 43940), (3640, 42926), (4394, 35560), (4445, 35152), (4732, 33020), (5080, 30758), (5915, 26416), (6604, 23660), (6760, 23114), (7112, 21970), (7280, 21463), (8255, 18928), (8788, 17780), (8890, 17576), (9464, 16510), (10160, 15379), (10985, 14224), (11557, 13520), (11830, 13208)]