639134080

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76819}}^1$

素因数の和:76851

約数の個数: 64

約数和(自身を含む): 1645484400

約数和(自身を除く): 1006350320

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 4160, 8320, 76819, 153638, 307276, 384095, 614552, 768190, 998647, 1229104, 1536380, 1997294, 2458208, 3072760, 3994588, 4916416, 4993235, 6145520, 7989176, 9832832, 9986470, 12291040, 15978352, 19972940, 24582080, 31956704, 39945880, 49164160, 63913408, 79891760, 127826816, 159783520, 319567040, 639134080]

約数ペア:

[(1, 639134080), (2, 319567040), (4, 159783520), (5, 127826816), (8, 79891760), (10, 63913408), (13, 49164160), (16, 39945880), (20, 31956704), (26, 24582080), (32, 19972940), (40, 15978352), (52, 12291040), (64, 9986470), (65, 9832832), (80, 7989176), (104, 6145520), (128, 4993235), (130, 4916416), (160, 3994588), (208, 3072760), (260, 2458208), (320, 1997294), (416, 1536380), (520, 1229104), (640, 998647), (832, 768190), (1040, 614552), (1664, 384095), (2080, 307276), (4160, 153638), (8320, 76819)]