18643864

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{709}}^1$

素因数の和:907

約数の個数: 32

約数和(自身を含む): 37062000

約数和(自身を除く): 18418136

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 173, 346, 692, 709, 1384, 1418, 2836, 3287, 5672, 6574, 13148, 13471, 26296, 26942, 53884, 107768, 122657, 245314, 490628, 981256, 2330483, 4660966, 9321932, 18643864]

約数ペア:

[(1, 18643864), (2, 9321932), (4, 4660966), (8, 2330483), (19, 981256), (38, 490628), (76, 245314), (152, 122657), (173, 107768), (346, 53884), (692, 26942), (709, 26296), (1384, 13471), (1418, 13148), (2836, 6574), (3287, 5672)]