18725440

素因数分解:

$2^6\times 5^1\times {\mathrm{163}}^1\times {\mathrm{359}}^1$

素因数の和:539

約数の個数: 56

約数和(自身を含む): 44988480

約数和(自身を除く): 26263040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 163, 320, 326, 359, 652, 718, 815, 1304, 1436, 1630, 1795, 2608, 2872, 3260, 3590, 5216, 5744, 6520, 7180, 10432, 11488, 13040, 14360, 22976, 26080, 28720, 52160, 57440, 58517, 114880, 117034, 234068, 292585, 468136, 585170, 936272, 1170340, 1872544, 2340680, 3745088, 4681360, 9362720, 18725440]

約数ペア:

[(1, 18725440), (2, 9362720), (4, 4681360), (5, 3745088), (8, 2340680), (10, 1872544), (16, 1170340), (20, 936272), (32, 585170), (40, 468136), (64, 292585), (80, 234068), (160, 117034), (163, 114880), (320, 58517), (326, 57440), (359, 52160), (652, 28720), (718, 26080), (815, 22976), (1304, 14360), (1436, 13040), (1630, 11488), (1795, 10432), (2608, 7180), (2872, 6520), (3260, 5744), (3590, 5216)]