18453760

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1109}}^1$

素因数の和:1143

約数の個数: 72

約数和(自身を含む): 47645640

約数和(自身を除く): 29191880

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, 520, 640, 832, 1040, 1109, 1280, 1664, 2080, 2218, 3328, 4160, 4436, 5545, 8320, 8872, 11090, 14417, 16640, 17744, 22180, 28834, 35488, 44360, 57668, 70976, 72085, 88720, 115336, 141952, 144170, 177440, 230672, 283904, 288340, 354880, 461344, 576680, 709760, 922688, 1153360, 1419520, 1845376, 2306720, 3690752, 4613440, 9226880, 18453760]

約数ペア:

[(1, 18453760), (2, 9226880), (4, 4613440), (5, 3690752), (8, 2306720), (10, 1845376), (13, 1419520), (16, 1153360), (20, 922688), (26, 709760), (32, 576680), (40, 461344), (52, 354880), (64, 288340), (65, 283904), (80, 230672), (104, 177440), (128, 144170), (130, 141952), (160, 115336), (208, 88720), (256, 72085), (260, 70976), (320, 57668), (416, 44360), (520, 35488), (640, 28834), (832, 22180), (1040, 17744), (1109, 16640), (1280, 14417), (1664, 11090), (2080, 8872), (2218, 8320), (3328, 5545), (4160, 4436)]