15880904

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{491}}^1$

素因数の和:821

約数の個数: 32

約数和(自身を含む): 32235840

約数和(自身を除く): 16354936

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 311, 491, 622, 982, 1244, 1964, 2488, 3928, 4043, 6383, 8086, 12766, 16172, 25532, 32344, 51064, 152701, 305402, 610804, 1221608, 1985113, 3970226, 7940452, 15880904]

約数ペア:

[(1, 15880904), (2, 7940452), (4, 3970226), (8, 1985113), (13, 1221608), (26, 610804), (52, 305402), (104, 152701), (311, 51064), (491, 32344), (622, 25532), (982, 16172), (1244, 12766), (1964, 8086), (2488, 6383), (3928, 4043)]