18728320

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2251}}^1$

素因数の和:2283

約数の個数: 64

約数和(自身を含む): 48237840

約数和(自身を除く): 29509520

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, 2251, 4160, 4502, 8320, 9004, 11255, 18008, 22510, 29263, 36016, 45020, 58526, 72032, 90040, 117052, 144064, 146315, 180080, 234104, 288128, 292630, 360160, 468208, 585260, 720320, 936416, 1170520, 1440640, 1872832, 2341040, 3745664, 4682080, 9364160, 18728320]

約数ペア:

[(1, 18728320), (2, 9364160), (4, 4682080), (5, 3745664), (8, 2341040), (10, 1872832), (13, 1440640), (16, 1170520), (20, 936416), (26, 720320), (32, 585260), (40, 468208), (52, 360160), (64, 292630), (65, 288128), (80, 234104), (104, 180080), (128, 146315), (130, 144064), (160, 117052), (208, 90040), (260, 72032), (320, 58526), (416, 45020), (520, 36016), (640, 29263), (832, 22510), (1040, 18008), (1664, 11255), (2080, 9004), (2251, 8320), (4160, 4502)]