72545420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{190909}}^1$

素因数の和:190937

約数の個数: 24

約数和(自身を含む): 160364400

約数和(自身を除く): 87818980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 190909, 381818, 763636, 954545, 1909090, 3627271, 3818180, 7254542, 14509084, 18136355, 36272710, 72545420]

約数ペア:

[(1, 72545420), (2, 36272710), (4, 18136355), (5, 14509084), (10, 7254542), (19, 3818180), (20, 3627271), (38, 1909090), (76, 954545), (95, 763636), (190, 381818), (380, 190909)]