19281820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{167}}^1\times {\mathrm{251}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 42674688

約数和(自身を除く): 23392868

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 167, 230, 251, 334, 460, 502, 668, 835, 1004, 1255, 1670, 2510, 3340, 3841, 5020, 5773, 7682, 11546, 15364, 19205, 23092, 28865, 38410, 41917, 57730, 76820, 83834, 115460, 167668, 209585, 419170, 838340, 964091, 1928182, 3856364, 4820455, 9640910, 19281820]

約数ペア:

[(1, 19281820), (2, 9640910), (4, 4820455), (5, 3856364), (10, 1928182), (20, 964091), (23, 838340), (46, 419170), (92, 209585), (115, 167668), (167, 115460), (230, 83834), (251, 76820), (334, 57730), (460, 41917), (502, 38410), (668, 28865), (835, 23092), (1004, 19205), (1255, 15364), (1670, 11546), (2510, 7682), (3340, 5773), (3841, 5020)]