18993844

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{491}}^1\times {\mathrm{509}}^1$

素因数の和:1023

約数の個数: 24

約数和(自身を含む): 35128800

約数和(自身を除く): 16134956

約数列:

[1, 2, 4, 19, 38, 76, 491, 509, 982, 1018, 1964, 2036, 9329, 9671, 18658, 19342, 37316, 38684, 249919, 499838, 999676, 4748461, 9496922, 18993844]

約数ペア:

[(1, 18993844), (2, 9496922), (4, 4748461), (19, 999676), (38, 499838), (76, 249919), (491, 38684), (509, 37316), (982, 19342), (1018, 18658), (1964, 9671), (2036, 9329)]