81796720

素因数分解:

$2^4\times 5^1\times {\mathrm{331}}^1\times {\mathrm{3089}}^1$

素因数の和:3433

約数の個数: 40

約数和(自身を含む): 190813680

約数和(自身を除く): 109016960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 331, 662, 1324, 1655, 2648, 3089, 3310, 5296, 6178, 6620, 12356, 13240, 15445, 24712, 26480, 30890, 49424, 61780, 123560, 247120, 1022459, 2044918, 4089836, 5112295, 8179672, 10224590, 16359344, 20449180, 40898360, 81796720]

約数ペア:

[(1, 81796720), (2, 40898360), (4, 20449180), (5, 16359344), (8, 10224590), (10, 8179672), (16, 5112295), (20, 4089836), (40, 2044918), (80, 1022459), (331, 247120), (662, 123560), (1324, 61780), (1655, 49424), (2648, 30890), (3089, 26480), (3310, 24712), (5296, 15445), (6178, 13240), (6620, 12356)]