18991040

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3491}}^1$

素因数の和:3525

約数の個数: 56

約数和(自身を含む): 47896272

約数和(自身を除く): 28905232

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 272, 320, 340, 544, 680, 1088, 1360, 2720, 3491, 5440, 6982, 13964, 17455, 27928, 34910, 55856, 59347, 69820, 111712, 118694, 139640, 223424, 237388, 279280, 296735, 474776, 558560, 593470, 949552, 1117120, 1186940, 1899104, 2373880, 3798208, 4747760, 9495520, 18991040]

約数ペア:

[(1, 18991040), (2, 9495520), (4, 4747760), (5, 3798208), (8, 2373880), (10, 1899104), (16, 1186940), (17, 1117120), (20, 949552), (32, 593470), (34, 558560), (40, 474776), (64, 296735), (68, 279280), (80, 237388), (85, 223424), (136, 139640), (160, 118694), (170, 111712), (272, 69820), (320, 59347), (340, 55856), (544, 34910), (680, 27928), (1088, 17455), (1360, 13964), (2720, 6982), (3491, 5440)]