19491280

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{4597}}^1$

素因数の和:4663

約数の個数: 40

約数和(自身を含む): 46182312

約数和(自身を除く): 26691032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 4597, 9194, 18388, 22985, 36776, 45970, 73552, 91940, 183880, 243641, 367760, 487282, 974564, 1218205, 1949128, 2436410, 3898256, 4872820, 9745640, 19491280]

約数ペア:

[(1, 19491280), (2, 9745640), (4, 4872820), (5, 3898256), (8, 2436410), (10, 1949128), (16, 1218205), (20, 974564), (40, 487282), (53, 367760), (80, 243641), (106, 183880), (212, 91940), (265, 73552), (424, 45970), (530, 36776), (848, 22985), (1060, 18388), (2120, 9194), (4240, 4597)]