19999190

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{977}}^1$

素因数の和:1096

約数の個数: 32

約数和(自身を含む): 38024640

約数和(自身を除く): 18025450

約数列:

[1, 2, 5, 10, 23, 46, 89, 115, 178, 230, 445, 890, 977, 1954, 2047, 4094, 4885, 9770, 10235, 20470, 22471, 44942, 86953, 112355, 173906, 224710, 434765, 869530, 1999919, 3999838, 9999595, 19999190]

約数ペア:

[(1, 19999190), (2, 9999595), (5, 3999838), (10, 1999919), (23, 869530), (46, 434765), (89, 224710), (115, 173906), (178, 112355), (230, 86953), (445, 44942), (890, 22471), (977, 20470), (1954, 10235), (2047, 9770), (4094, 4885)]