20846805

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{113}}^1\times {\mathrm{251}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 39299904

約数和(自身を除く): 18453099

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 113, 147, 245, 251, 339, 565, 735, 753, 791, 1255, 1695, 1757, 2373, 3765, 3955, 5271, 5537, 8785, 11865, 12299, 16611, 26355, 27685, 28363, 36897, 61495, 83055, 85089, 141815, 184485, 198541, 425445, 595623, 992705, 1389787, 2978115, 4169361, 6948935, 20846805]

約数ペア:

[(1, 20846805), (3, 6948935), (5, 4169361), (7, 2978115), (15, 1389787), (21, 992705), (35, 595623), (49, 425445), (105, 198541), (113, 184485), (147, 141815), (245, 85089), (251, 83055), (339, 61495), (565, 36897), (735, 28363), (753, 27685), (791, 26355), (1255, 16611), (1695, 12299), (1757, 11865), (2373, 8785), (3765, 5537), (3955, 5271)]