18936320

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{569}}^1$

素因数の和:605

約数の個数: 80

約数和(自身を含む): 48981240

約数和(自身を除く): 30044920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 569, 640, 832, 1040, 1138, 1280, 1664, 2080, 2276, 2560, 2845, 3328, 4160, 4552, 5690, 6656, 7397, 8320, 9104, 11380, 14794, 16640, 18208, 22760, 29588, 33280, 36416, 36985, 45520, 59176, 72832, 73970, 91040, 118352, 145664, 147940, 182080, 236704, 291328, 295880, 364160, 473408, 591760, 728320, 946816, 1183520, 1456640, 1893632, 2367040, 3787264, 4734080, 9468160, 18936320]

約数ペア:

[(1, 18936320), (2, 9468160), (4, 4734080), (5, 3787264), (8, 2367040), (10, 1893632), (13, 1456640), (16, 1183520), (20, 946816), (26, 728320), (32, 591760), (40, 473408), (52, 364160), (64, 295880), (65, 291328), (80, 236704), (104, 182080), (128, 147940), (130, 145664), (160, 118352), (208, 91040), (256, 73970), (260, 72832), (320, 59176), (416, 45520), (512, 36985), (520, 36416), (569, 33280), (640, 29588), (832, 22760), (1040, 18208), (1138, 16640), (1280, 14794), (1664, 11380), (2080, 9104), (2276, 8320), (2560, 7397), (2845, 6656), (3328, 5690), (4160, 4552)]