28398730

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{1091}}^1$

素因数の和:1254

約数の個数: 32

約数和(自身を含む): 54250560

約数和(自身を除く): 25851830

約数列:

[1, 2, 5, 10, 19, 38, 95, 137, 190, 274, 685, 1091, 1370, 2182, 2603, 5206, 5455, 10910, 13015, 20729, 26030, 41458, 103645, 149467, 207290, 298934, 747335, 1494670, 2839873, 5679746, 14199365, 28398730]

約数ペア:

[(1, 28398730), (2, 14199365), (5, 5679746), (10, 2839873), (19, 1494670), (38, 747335), (95, 298934), (137, 207290), (190, 149467), (274, 103645), (685, 41458), (1091, 26030), (1370, 20729), (2182, 13015), (2603, 10910), (5206, 5455)]